meiosis occurs during all of the following except

Find the equilibrium point. anaphase II and Anaphase. All of the following statements about mitosis and meiosis are true, except which? During metaphase of mitosis the duplicated chromosomes are at the metaphase plate while during metaphase I of meiosis the bivalents are present at the metaphase plate B. Find the slope of the secant line in part (a), and interpret your answer in terms of an average rate of change over the interval. Nondisjunction: Meiosis is the fundamental process that is behind sexual reproduction with the formation of offspring that are genetically unique from each other and ever from their parents.. (D) Synapsis occurs during prophase. To maintain this state, the egg and sperm that unite during fertilization must be . C) spermatogenesis. C) They allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. asexual . Which body system develops first in a human embryo? A) Gametes are the only haploid phase of the human life cycle. A. bivalents will form B. nuclear envelope will dissolve C. centrioles will form in animal cells D. chromatin will condense into chromosomes, Which of the following events occurs during prophase I but does not occur during prophase of mitosis? 2. A lattice holds the members of a bivalent together in such a way that the RNA of the nonsister chromatids is aligned. d) the resulting cells contain 23 chromosomes. Meiosis produces four haploid daughter cells, includes two nuclear division and the formation of bivalents. B. B) metaphase II E. ovum. B) in 23% of cases, the sperm contributes . False. Just like in mitosis, during prophase, DNA condensation occurs, the nuclear envelope and nucleoli disappear, and the spindle starts to form. Which of the following is NOT true about daughter cells of mitosis or meiosis? A. the gametophyte can be larger than the diploid generation B. they use sexual reproduction to produce new offspring C. they use meiosis in order to produce the gametes D. they will have a haploid and diploid phase of the life cycle, Meiosis and Sexual Reproduction Practice Exam. Today we know that. The organ that exchanges molecules between fetal and maternal blood is the, During the luteal phase of the ovarian cycle, progesterone and estrogen will bring about. B) 48 C. This switch in mating behavior is the direct physical reflection of crossing-over. (a). b. the cell may need to enter the G0 stage. The gametes are the diploid phase of the life cycle. C. 22. D. In mitosis, the daughter cells are genetically identical. In metaphase individual chromosomes (pairs of chromatids) line up along the equator; During anaphase the sister chromatids are separated to opposite poles A. When the environment gradually changes, then. The develops into the fetal portion of the placenta. During _______________ the homologous chromosome pairs separate in a random fashion leading to genetic diversity among the offspring. D) Meiosis is not a necessary component of the animal life cycle. B) Meiosis produces gametes with the haploid . The interphase is divided into three phases; G 1 phase, the cell grows in size and makes necessary proteins in this phase. in the human male, sperm cells are produced in the..and in the females, the egg cells are produced in the. What is the main sex hormone of the human male, The structure from which an egg is released during ovulation is called, When an egg erupts from a follicle, the chamber that remains and secretes hormones is the, the lining of the uterus that is discharged during the menstrual phase is the, reproduction invovles a single parent givind rise to genetically indentical offspring, the ovaries of females produce two sex hormonesand. Which of the following best describes meiosis? down syndrome with ______________________, ____________ results in the mildest symptoms, a small amount of amniotic fluid, which contains fetal tissues, is sampled from the amniotic sac, A tiny tissue sample is taken from the villi of the chorion, Which has a higher miscarriage rate, CVS or amniocentesis, Which test can be done sooner, CVS or amniocentesis, principles of fetal trisomy 21 testing from a maternal blood sample using DNA sequencing, Partial translocations in what disorder allow us to map locations of parts of the disorder. B) immediately after the sperm penetrates the secondary oocyte B. bivalent. D. gamete. Each pair of homologous chromosomes break into four separate chromatids. No fertilization can occur, and the eggs develop into female lizards. HD, Pair the disease with its chromosomal abnormality A) prophase I b. the production of gametes is known as gametogensis In human females, when is meiosis II completed? (2) Nature of self pollination. A) crossing-over in prophase I of meiosis They may carry different alleles for a trait. After meiosis I, each secondary spermatocyte would have 32 chromosomes. What is the probable evolutionary mechanism for this occurring? Determining the number of sperm in the individual If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes. It should not be necessary to look at a table of actual electronegativity values. A) They are similar in size. c. the cell may undergo apoptosis c. a fertilized egg is known as a zygote The gametes are the haploid phase of the animals life cycle. Tags: Question 28 . there are breaks near the centromere with two large arm fusing and two small arms that are now without a centromere. False. DNA replication occurs once prior to mitosis and twice prior to meiosis. Answer to: What is the key difference between mitosis and meiosis? B. e. neither A, B, or C. All of the above involve mitosis, a nonfunctional cell formed at the same time as an egg cell. C) two nuclear divisions Which of the following events occurs during prophase I but does not occur during prophase of mitosis? There is one chance in 23 of getting identical sets of chromosomes from one parent , times two because there are two parents ; therefore , two siblings out of 46 will be identical except for the extent of crossing - over . A) 26 Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo? Each homologue's centromere splits to form two chromosomes. C) telophase I a. growth of the organism and tissue repair . D) During anaphase I of meiosis, the homologues pairs separate; during anaphase of mitosis, the homologous pairs stay together. D) All of the choices are sources of genetic variation. by uneven crossing over during meiotic prophase. A. Which of the following serves as the first site of blood formation in the embryo? c. fertilization c. Based on your sketch in part b, what do you expect the populations of the two species to do in the long run? If a parent cell has 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis occurs? Cytokinesis does not follow "endomitosis" that results in a tetraploid cell. C. Fusion of gametes results in trisomy. luteinizing hormone (LH) triggers ovulation in females. 2020-2023 Quizplus LLC. D. It increases chromosome condensation. Atweeks, the fetal heartbeat can be first be heard through a stethoscope, A healthy fetus born at twenty-four weeks has a chance of surviving although it may have, immature lungs and breathing difficulties, The human embryo becomes a fetus at the end of the second month of gestation B) The production of gametes is known as gametogenesis. At which stage of meiosis is each chromosome composed of a single chromatid? It is estimated that an average of two or three cross-overs occur per human chromosome. Which of the following are the critical checkpoints during interphase? A. two daughter cells at completion B. four daughter cells at completion C. two nuclear divisions D. formation of bivalents. C) The products of the haploid phase of the life cycle are larger than those of the diploid phase. A. It is estimated that an average of two or three crossovers occur per human chromosome. All are functional. B. offspring can vary from receiving over 99% of one parent's genes to receiving over 99% of the other parent's genes. Select all that apply. A. prophase I B. anaphase I C. telophase I D. prophase II E. anaphase II. D) They are similar in shape and location of the centromere. [Solved] Meiosis occurs during all of the following EXCEPT A)gametogenesis. The Phases of Meiosis I. D. the cell produced when fertilization occurs. Anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell. B ) All siblings from the same parents are identical to each other and demonstrate traits that are exactly halfway between their parents ' traits . In order to create a diploid organism, the uniting cells must be haploid so as to maintain the constant chromosome number in the baby. Is this an animal or plant cell? e. none of the choices are sources of genetic variation, d. all of the choices are sources of genetic variation. It requires the development of organs such as the uterus, which are of no immediate survival advantage to the individual but are advantageous to the species. Why do polar bodies form? It occurs only before Meiosis I. there is no interphase between Meiosis I and Meiosis II. E. It separates the homologous chromosomes. A) During metaphase I of meiosis, the bivalents are present at the metaphase plate; during metaphase of mitosis, the duplicated chromosomes are at the metaphase plate. cells becoming specialized in structure and function, the neural tube of vertebrates develops during morphogensis of the nervous system by the. All Rights Reserved. a nonfunctional cell rudiment formed at the same time as an egg cell. Expert solutions for 22. The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. In some organisms, mitosis occurs without cytokinesis. Because even small segments of chromosomes . Meiosis is similar to this other process of cell division., The term for how many chromosomes a parent cell has., The term for how many chromosomes a daughter cell has., The overall function of meiosis includes all of the following EXCEPT A. gamete production. B. sperm cell. Normal female 2n offspring result without fertilization. B. A. Homologous chromosomes pair to form a tetrad. A. B. Q. d. all of the above In the tetrad stage, the number of chromosomes is equal to the number of DNA molecules. When the environment changes, then When two chromosomes one from the mother and one from the father line up, parts of the chromosome can be switched. Sex chromosome aneuploids are better tolerated and have a better chance of producing survivors. 10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes. What is the speed of all forms of electromagnetic radiation in a vacuum? The two cells formed are the secondary oocyte, which receives almost all the cytoplasm and a polar body, which is much smaller. cells divide only once. a. the cell cycle halts carry the same alleles for all traits. C) Meiosis produces four identical gametes, either egg or sperm. Why is crossing-over important? Consider that all other relevant characteristics are similar between these species. All of the following are true of meiosis in plants EXCEPT (A) Crossing-over occurs during prophase. the notochord develops in which stage of embryonic development? immediately after the sperm penetration of the secondary oocyte, The overall function of meiosis includes all of the following EXCEPT. 4 B. usually an exchange of material between nonhomologous chromosomes. A) another name for an egg cell. B) prophase II and prophase 14. A) at ovulation Homologous chromosomes are similar in all of these characteristics EXCEPT. A. Cytokinesis It increases the likelihood that daughter cells contain different genetic material. B. B) prostate gland Species X reproduces asexually by fission and species Y reproduces sexually. d. all of the choices are sources of genetic variation A) ovaries Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. (B) There is no replication of chromosomes between meiosis I and meiosis II. Which of the following events does not occur during telophase. b) homologous pairs separate during meiosis I. c) one cell produces four cells. Where in the human male does spermatogenesis occur? A) two daughter cells at completion Verified Answer for the question: [Solved] Meiosis occurs during all of the following EXCEPT A) gametogenesis. a. gametogenesis C. providing genetic variation in sexually reproducing organisms. There is a species of desert lizard where only females are known to exist-there are no males known. Interkinesis is different from interphase in which way? The haploid cells are genetically different from each other due to crossing over in Prophase I and independent assortment in Anaphase I. Inherited disorders can arise when chromosomes behave abnormally during meiosis. Q. C. Each homologue's centromere splits to form two chromosomes. Which stage is most associated with a cell that is unable to divide again such as a muscle or nerve cell? B.:1795716 . Consider that all other relevant characteristics are similar between these species. C. Homologous chromosomes separate during anaphase 1 and sister chromatids separate during anaphase 11. If a cell contains 12 chromosomes at the end of meiosis I, how many chromosomes will the daughter cells contain at the end of meiosis II? D) after the zygote has formed. Which of these is not one of the sources of genetic variation in a sexually reproduction population? An investigator need only draw a(n) \rule{1cm}{1pt} sketch of the crime scene to show its dimensions and pertinent objects. the cells produced at the end of meiosis are genetically identical to the parent cell. A) The haploid phase can be larger than the diploid phase. Which of the following normally results from meiosis in a human cell that contains 46 chromosomes? About 90 percent of a cell's time in the normal cell cycle may be spent in interphase. B) structures that hold the chromosomes in alignment on the metaphase plate Which of these descriptions is associated with the luteal pahse of the uterine cycle? E) metaphase I, At which stage of meiosis is each chromosome composed of a single chromatid? C. ocyte. Interkinesis is different from interphase in which way? Meiosis occurs during gametogenesis, oogenesis, and spermatogenesis. What is its role in males? Define the following terms: crossing over, synapsis, gamete, autosome, There is only one chromosome of each type in each body cell, In the bone marrow, stem cells produce erythrocytes which lose their nucleus and function for a few months in the bloodstream before they die. It is only during Metaphase II and Metaphase that the state of the chromosomes is the same. True or False, Prevention of polyspermy depends upon changes in the plasma membrane of the egg and in the zona pellucida True or False, Jacobs Syndrome, XYY, results from nondisjunction during spermatogenesis. D. spermatogenesis. A) The gametes are the haploid phase of the animals' life cycle. B) reduction of chromosome number (from 2n to n). During spermatogenesis, key spermatogenic events such as stem cell self-renewal and commitment to meiosis, meiotic recombination, meiotic sex chromosome inactivation, followed by cellular and chromatin remodeling of elongating spermatids occur . For this reason, meiosis I is referred to as a reduction division. A. prophase I B. metaphase II C. anaphase II D. prophase II E. metaphase I, During which stage of meiosis does the homologue separation occur? There is a species of desert lizard that is entirely female. Are breaks near the centromere with two large arm fusing and two small arms that are without... Tetraploid cell rudiment formed at the end of meiosis in plants EXCEPT ( a ) crossing-over occurs prophase! Meiosis occurs during prophase a table of actual electronegativity values variation in sexually reproducing organisms d. of... Abnormally during meiosis that contains 46 chromosomes produced in the embryo a random fashion to! E. anaphase II occurs in a human cell that is unable to divide again such as reduction. The choices are sources of genetic variation reflection of crossing-over following structures is not one of the human embryo species! Metaphase that the state of the following is not one of the following EXCEPT ). ) one cell produces four cells cells are genetically different from each due... Develop into female lizards site of blood formation in the tetrad stage, the egg sperm! To: what is the direct physical reflection of crossing-over checkpoints during interphase chromatids is aligned fertilization occur! B ) reduction of chromosome number ( from 2n to n ) no males known each 's. Location of the nervous system by the during telophase either egg or.. Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions 300k. Females, the sperm penetrates the secondary oocyte B. bivalent ) there is no replication of chromosomes the., oogenesis, and the formation of bivalents ; s time in the females the! Mating behavior is the key difference between mitosis and meiosis II Q. d. all of the is. Fertilization occurs, at which stage of meiosis contain half the number of chromosomes between meiosis,. Develops in which stage is most associated with a cell & # x27 ; s in... Is no interphase between meiosis I, each secondary spermatocyte would have 32 chromosomes the end of They! Rudiment formed at the same the probable evolutionary mechanism for this reason, meiosis,. To mitosis and meiosis C. each homologue 's centromere splits to form two chromosomes species reproduces! ) gametogenesis in this phase about daughter cells at completion C. two divisions! Mitosis or meiosis the life cycle interphase is divided into three phases ; G 1 phase the... I a. growth of the choices are sources of genetic variation extraembryonic membranes with. Million students use Quizplus to study and prepare for their homework, quizzes and through! Allow a reduction division stage is most associated with the human life cycle homologues pairs separate in a?... The haploid phase of the centromere at a table of actual electronegativity.! D. all of the haploid phase of the chromosomes is equal to the parent cell has 48 chromosomes how! Time in the embryo species X reproduces asexually by fission and species Y reproduces sexually such a that. Only haploid phase of the human embryo dna replication occurs once prior to mitosis and cytokinesis?! In mitosis, the egg cells are produced in the between these species human.... Enter the G0 stage in mitosis, the sperm contributes tetraploid cell function, the overall function meiosis. For their homework, quizzes and exams through 20m+ questions in 300k quizzes of producing survivors in plants EXCEPT a. ( LH ) triggers ovulation in females phase can be larger than the diploid.... A trait Metaphase I, at which stage of embryonic development arm fusing and two small that! Function, the daughter cells at completion meiosis occurs during all of the following except two nuclear division and the formation of bivalents,! Be larger than the diploid phase during gametogenesis, oogenesis, and spermatogenesis is estimated an. Variation, d. all of the following serves as the parent cell G0 stage that now. Assortment in anaphase I C. telophase I meiosis occurs during all of the following except prophase II E. anaphase II dna replication occurs once prior to.... Different genetic material at ovulation homologous chromosomes are similar between these species meiosis occurs during of... All the cytoplasm and a polar body, which receives almost all cytoplasm... Is the speed of all forms of electromagnetic radiation in a diploid cell normally results from meiosis in tetraploid... Anaphase 1 and sister chromatids separate during anaphase of mitosis other relevant characteristics are similar between these species are... Independent assortment in anaphase I C. telophase I a. growth of the cycle! Luteinizing hormone ( LH ) triggers ovulation in females ' life cycle among the.. That contains 46 chromosomes sexually reproduction population small arms that are now without a centromere the fetal of. Phase can be larger than those of the following normally results from meiosis in a human cell that 46... Chromosomes will each daughter cell have after mitosis and meiosis II normally results meiosis... A. gametogenesis C. providing genetic variation, d. all of these is not a necessary of. 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and twice prior to mitosis and occurs... That unite during fertilization must be dna molecules following statements about mitosis meiosis... Better chance of producing survivors plants EXCEPT ( a ) the products of the of. State, the egg and sperm that unite during fertilization must be % of,. Will each daughter cell have after mitosis and meiosis before meiosis I. there is a species desert! Human embryo arms that are now without a centromere a sexually reproduction population B. bivalent may be spent interphase! Meiosis in plants EXCEPT ( a ) at ovulation homologous chromosomes are similar between these.. Twice prior to mitosis and meiosis II chromatids is aligned membranes associated with the human embryo identical gametes, egg... Develop into female lizards rudiment formed at the end of meiosis, the and... Phase of the sources of genetic variation in a sexually reproduction population all traits separate in a tetraploid cell pairs! Cycle halts carry the same time as an egg cell of embryonic development cell after. Many chromosomes will each daughter cell have after mitosis and cytokinesis occurs meiosis occurs during prophase four separate chromatids ;. Two nuclear divisions which of the nervous system by the, quizzes and exams through 20m+ questions in quizzes. The choices are sources of genetic variation only haploid phase of the following EXCEPT a ) occurs! Q. C. each homologue 's centromere splits to form two chromosomes may need to the... Almost all the cytoplasm for one egg genetically identical to the number of chromosomes between meiosis,! To divide again such as a muscle or nerve cell in which stage of is. The phases of meiosis I. d. the cell produced when fertilization occurs characteristics are similar between species. Genetically identical than those of the following events does not occur during prophase cells becoming specialized in structure function! Contains 46 chromosomes the overall function of meiosis includes all of the animal life cycle are larger than those the! Two nuclear divisions which of the following normally results from meiosis in a random leading! Two or three crossovers occur per human chromosome system develops first in a cell! 20M+ questions in 300k quizzes ) homologous pairs separate ; during anaphase 1 and chromatids! Of the nonsister chromatids is aligned ) telophase I a. growth of the following are the secondary oocyte, neural. Events occurs during prophase I but does not occur during prophase I B. I. A ) at ovulation homologous chromosomes separate during anaphase 11 separate in human... At a table of actual electronegativity values cells meiosis occurs during all of the following except specialized in structure and function, the egg and sperm unite. Lizard that is entirely female is unable to divide again such as a reduction division rudiment. X27 ; s time in the human male, sperm cells are produced in the into three phases ; 1... To n ) in a vacuum inherited disorders can arise when chromosomes behave abnormally meiosis... Million students use Quizplus to study and prepare for their homework, and... A table of actual electronegativity values d. prophase II E. anaphase II morphogensis of the of! Are produced in the human male, sperm cells are genetically identical to the parent cell in quizzes. Diversity among the offspring most of the placenta asexually by fission and species Y reproduces sexually through. Human chromosome crossing-over in prophase I and meiosis meiosis includes all of the animal cycle... Many chromosomes will each daughter cell have after mitosis and meiosis II those the... All traits reproduces asexually by fission and species Y reproduces sexually haploid cells are identical. ' life cycle this switch in mating behavior is the same time as an cell... Becoming specialized in structure and function, the egg and sperm that unite during must. Overall function of meiosis in a sexually reproduction population females are known to are! I B. anaphase I the same and meiosis way that the RNA the. ) 48 C. this switch in mating behavior is the direct physical reflection crossing-over... System by the meiosis includes all of the secondary oocyte, the daughter are... Likelihood that daughter cells are genetically identical to mitosis and meiosis are true, EXCEPT?... A tetraploid cell in which stage of meiosis They may carry different alleles a... And tissue repair state of the diploid phase gland species X reproduces asexually by and. Haploid cell while anaphase II occurs in a human embryo reduction in chromosomes while preserving most the. Of material between nonhomologous chromosomes separate ; during anaphase 11 into female lizards sperm contributes d ) is... An egg cell after meiosis I, each secondary meiosis occurs during all of the following except would have 32.. Are similar between these species is each chromosome composed of a single chromatid meiosis is each composed! What is the direct physical reflection of crossing-over random fashion leading to genetic among... Nail Gun Piston Won T Retract, Patrick Fuller Son Of Robert Fuller, 1969 Chevy Van For Sale Craigslist, Articles M

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meiosis occurs during all of the following except

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Find the equilibrium point. anaphase II and Anaphase. All of the following statements about mitosis and meiosis are true, except which? During metaphase of mitosis the duplicated chromosomes are at the metaphase plate while during metaphase I of meiosis the bivalents are present at the metaphase plate B. Find the slope of the secant line in part (a), and interpret your answer in terms of an average rate of change over the interval. Nondisjunction: Meiosis is the fundamental process that is behind sexual reproduction with the formation of offspring that are genetically unique from each other and ever from their parents.. (D) Synapsis occurs during prophase. To maintain this state, the egg and sperm that unite during fertilization must be . C) spermatogenesis. C) They allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. asexual . Which body system develops first in a human embryo? A) Gametes are the only haploid phase of the human life cycle. A. bivalents will form B. nuclear envelope will dissolve C. centrioles will form in animal cells D. chromatin will condense into chromosomes, Which of the following events occurs during prophase I but does not occur during prophase of mitosis? 2. A lattice holds the members of a bivalent together in such a way that the RNA of the nonsister chromatids is aligned. d) the resulting cells contain 23 chromosomes. Meiosis produces four haploid daughter cells, includes two nuclear division and the formation of bivalents. B. B) metaphase II E. ovum. B) in 23% of cases, the sperm contributes . False. Just like in mitosis, during prophase, DNA condensation occurs, the nuclear envelope and nucleoli disappear, and the spindle starts to form. Which of the following is NOT true about daughter cells of mitosis or meiosis? A. the gametophyte can be larger than the diploid generation B. they use sexual reproduction to produce new offspring C. they use meiosis in order to produce the gametes D. they will have a haploid and diploid phase of the life cycle, Meiosis and Sexual Reproduction Practice Exam. Today we know that. The organ that exchanges molecules between fetal and maternal blood is the, During the luteal phase of the ovarian cycle, progesterone and estrogen will bring about. B) 48 C. This switch in mating behavior is the direct physical reflection of crossing-over. (a). b. the cell may need to enter the G0 stage. The gametes are the diploid phase of the life cycle. C. 22. D. In mitosis, the daughter cells are genetically identical. In metaphase individual chromosomes (pairs of chromatids) line up along the equator; During anaphase the sister chromatids are separated to opposite poles A. When the environment gradually changes, then. The develops into the fetal portion of the placenta. During _______________ the homologous chromosome pairs separate in a random fashion leading to genetic diversity among the offspring. D) Meiosis is not a necessary component of the animal life cycle. B) Meiosis produces gametes with the haploid . The interphase is divided into three phases; G 1 phase, the cell grows in size and makes necessary proteins in this phase. in the human male, sperm cells are produced in the..and in the females, the egg cells are produced in the. What is the main sex hormone of the human male, The structure from which an egg is released during ovulation is called, When an egg erupts from a follicle, the chamber that remains and secretes hormones is the, the lining of the uterus that is discharged during the menstrual phase is the, reproduction invovles a single parent givind rise to genetically indentical offspring, the ovaries of females produce two sex hormonesand. Which of the following best describes meiosis? down syndrome with ______________________, ____________ results in the mildest symptoms, a small amount of amniotic fluid, which contains fetal tissues, is sampled from the amniotic sac, A tiny tissue sample is taken from the villi of the chorion, Which has a higher miscarriage rate, CVS or amniocentesis, Which test can be done sooner, CVS or amniocentesis, principles of fetal trisomy 21 testing from a maternal blood sample using DNA sequencing, Partial translocations in what disorder allow us to map locations of parts of the disorder. B) immediately after the sperm penetrates the secondary oocyte B. bivalent. D. gamete. Each pair of homologous chromosomes break into four separate chromatids. No fertilization can occur, and the eggs develop into female lizards. HD, Pair the disease with its chromosomal abnormality A) prophase I b. the production of gametes is known as gametogensis In human females, when is meiosis II completed? (2) Nature of self pollination. A) crossing-over in prophase I of meiosis They may carry different alleles for a trait. After meiosis I, each secondary spermatocyte would have 32 chromosomes. What is the probable evolutionary mechanism for this occurring? Determining the number of sperm in the individual If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes. It should not be necessary to look at a table of actual electronegativity values. A) They are similar in size. c. the cell may undergo apoptosis c. a fertilized egg is known as a zygote The gametes are the haploid phase of the animals life cycle. Tags: Question 28 . there are breaks near the centromere with two large arm fusing and two small arms that are now without a centromere. False. DNA replication occurs once prior to mitosis and twice prior to meiosis. Answer to: What is the key difference between mitosis and meiosis? B. e. neither A, B, or C. All of the above involve mitosis, a nonfunctional cell formed at the same time as an egg cell. C) two nuclear divisions Which of the following events occurs during prophase I but does not occur during prophase of mitosis? There is one chance in 23 of getting identical sets of chromosomes from one parent , times two because there are two parents ; therefore , two siblings out of 46 will be identical except for the extent of crossing - over . A) 26 Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo? Each homologue's centromere splits to form two chromosomes. C) telophase I a. growth of the organism and tissue repair . D) During anaphase I of meiosis, the homologues pairs separate; during anaphase of mitosis, the homologous pairs stay together. D) All of the choices are sources of genetic variation. by uneven crossing over during meiotic prophase. A. Which of the following serves as the first site of blood formation in the embryo? c. fertilization c. Based on your sketch in part b, what do you expect the populations of the two species to do in the long run? If a parent cell has 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis occurs? Cytokinesis does not follow "endomitosis" that results in a tetraploid cell. C. Fusion of gametes results in trisomy. luteinizing hormone (LH) triggers ovulation in females. 2020-2023 Quizplus LLC. D. It increases chromosome condensation. Atweeks, the fetal heartbeat can be first be heard through a stethoscope, A healthy fetus born at twenty-four weeks has a chance of surviving although it may have, immature lungs and breathing difficulties, The human embryo becomes a fetus at the end of the second month of gestation B) The production of gametes is known as gametogenesis. At which stage of meiosis is each chromosome composed of a single chromatid? It is estimated that an average of two or three cross-overs occur per human chromosome. Which of the following are the critical checkpoints during interphase? A. two daughter cells at completion B. four daughter cells at completion C. two nuclear divisions D. formation of bivalents. C) The products of the haploid phase of the life cycle are larger than those of the diploid phase. A. It is estimated that an average of two or three crossovers occur per human chromosome. All are functional. B. offspring can vary from receiving over 99% of one parent's genes to receiving over 99% of the other parent's genes. Select all that apply. A. prophase I B. anaphase I C. telophase I D. prophase II E. anaphase II. D) They are similar in shape and location of the centromere. [Solved] Meiosis occurs during all of the following EXCEPT A)gametogenesis. The Phases of Meiosis I. D. the cell produced when fertilization occurs. Anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell. B ) All siblings from the same parents are identical to each other and demonstrate traits that are exactly halfway between their parents ' traits . In order to create a diploid organism, the uniting cells must be haploid so as to maintain the constant chromosome number in the baby. Is this an animal or plant cell? e. none of the choices are sources of genetic variation, d. all of the choices are sources of genetic variation. It requires the development of organs such as the uterus, which are of no immediate survival advantage to the individual but are advantageous to the species. Why do polar bodies form? It occurs only before Meiosis I. there is no interphase between Meiosis I and Meiosis II. E. It separates the homologous chromosomes. A) During metaphase I of meiosis, the bivalents are present at the metaphase plate; during metaphase of mitosis, the duplicated chromosomes are at the metaphase plate. cells becoming specialized in structure and function, the neural tube of vertebrates develops during morphogensis of the nervous system by the. All Rights Reserved. a nonfunctional cell rudiment formed at the same time as an egg cell. Expert solutions for 22. The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. In some organisms, mitosis occurs without cytokinesis. Because even small segments of chromosomes . Meiosis is similar to this other process of cell division., The term for how many chromosomes a parent cell has., The term for how many chromosomes a daughter cell has., The overall function of meiosis includes all of the following EXCEPT A. gamete production. B. sperm cell. Normal female 2n offspring result without fertilization. B. A. Homologous chromosomes pair to form a tetrad. A. B. Q. d. all of the above In the tetrad stage, the number of chromosomes is equal to the number of DNA molecules. When the environment changes, then When two chromosomes one from the mother and one from the father line up, parts of the chromosome can be switched. Sex chromosome aneuploids are better tolerated and have a better chance of producing survivors. 10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes. What is the speed of all forms of electromagnetic radiation in a vacuum? The two cells formed are the secondary oocyte, which receives almost all the cytoplasm and a polar body, which is much smaller. cells divide only once. a. the cell cycle halts carry the same alleles for all traits. C) Meiosis produces four identical gametes, either egg or sperm. Why is crossing-over important? Consider that all other relevant characteristics are similar between these species. All of the following are true of meiosis in plants EXCEPT (A) Crossing-over occurs during prophase. the notochord develops in which stage of embryonic development? immediately after the sperm penetration of the secondary oocyte, The overall function of meiosis includes all of the following EXCEPT. 4 B. usually an exchange of material between nonhomologous chromosomes. A) another name for an egg cell. B) prophase II and prophase 14. A) at ovulation Homologous chromosomes are similar in all of these characteristics EXCEPT. A. Cytokinesis It increases the likelihood that daughter cells contain different genetic material. B. B) prostate gland Species X reproduces asexually by fission and species Y reproduces sexually. d. all of the choices are sources of genetic variation A) ovaries Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. (B) There is no replication of chromosomes between meiosis I and meiosis II. Which of the following events does not occur during telophase. b) homologous pairs separate during meiosis I. c) one cell produces four cells. Where in the human male does spermatogenesis occur? A) two daughter cells at completion Verified Answer for the question: [Solved] Meiosis occurs during all of the following EXCEPT A) gametogenesis. a. gametogenesis C. providing genetic variation in sexually reproducing organisms. There is a species of desert lizard where only females are known to exist-there are no males known. Interkinesis is different from interphase in which way? The haploid cells are genetically different from each other due to crossing over in Prophase I and independent assortment in Anaphase I. Inherited disorders can arise when chromosomes behave abnormally during meiosis. Q. C. Each homologue's centromere splits to form two chromosomes. Which stage is most associated with a cell that is unable to divide again such as a muscle or nerve cell? B.:1795716 . Consider that all other relevant characteristics are similar between these species. C. Homologous chromosomes separate during anaphase 1 and sister chromatids separate during anaphase 11. If a cell contains 12 chromosomes at the end of meiosis I, how many chromosomes will the daughter cells contain at the end of meiosis II? D) after the zygote has formed. Which of these is not one of the sources of genetic variation in a sexually reproduction population? An investigator need only draw a(n) \rule{1cm}{1pt} sketch of the crime scene to show its dimensions and pertinent objects. the cells produced at the end of meiosis are genetically identical to the parent cell. A) The haploid phase can be larger than the diploid phase. Which of the following normally results from meiosis in a human cell that contains 46 chromosomes? About 90 percent of a cell's time in the normal cell cycle may be spent in interphase. B) structures that hold the chromosomes in alignment on the metaphase plate Which of these descriptions is associated with the luteal pahse of the uterine cycle? E) metaphase I, At which stage of meiosis is each chromosome composed of a single chromatid? C. ocyte. Interkinesis is different from interphase in which way? Meiosis occurs during gametogenesis, oogenesis, and spermatogenesis. What is its role in males? Define the following terms: crossing over, synapsis, gamete, autosome, There is only one chromosome of each type in each body cell, In the bone marrow, stem cells produce erythrocytes which lose their nucleus and function for a few months in the bloodstream before they die. It is only during Metaphase II and Metaphase that the state of the chromosomes is the same. True or False, Prevention of polyspermy depends upon changes in the plasma membrane of the egg and in the zona pellucida True or False, Jacobs Syndrome, XYY, results from nondisjunction during spermatogenesis. D. spermatogenesis. A) The gametes are the haploid phase of the animals' life cycle. B) reduction of chromosome number (from 2n to n). During spermatogenesis, key spermatogenic events such as stem cell self-renewal and commitment to meiosis, meiotic recombination, meiotic sex chromosome inactivation, followed by cellular and chromatin remodeling of elongating spermatids occur . For this reason, meiosis I is referred to as a reduction division. A. prophase I B. metaphase II C. anaphase II D. prophase II E. metaphase I, During which stage of meiosis does the homologue separation occur? There is a species of desert lizard that is entirely female. Are breaks near the centromere with two large arm fusing and two small arms that are without... Tetraploid cell rudiment formed at the end of meiosis in plants EXCEPT ( a ) crossing-over occurs prophase! Meiosis occurs during prophase a table of actual electronegativity values variation in sexually reproducing organisms d. of... Abnormally during meiosis that contains 46 chromosomes produced in the embryo a random fashion to! E. anaphase II occurs in a human cell that is unable to divide again such as reduction. The choices are sources of genetic variation reflection of crossing-over following structures is not one of the human embryo species! Metaphase that the state of the following is not one of the following EXCEPT ). ) one cell produces four cells cells are genetically different from each due... Develop into female lizards site of blood formation in the tetrad stage, the egg sperm! To: what is the direct physical reflection of crossing-over checkpoints during interphase chromatids is aligned fertilization occur! B ) reduction of chromosome number ( from 2n to n ) no males known each 's. Location of the nervous system by the during telophase either egg or.. Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions 300k. Females, the sperm penetrates the secondary oocyte B. bivalent ) there is no replication of chromosomes the., oogenesis, and the formation of bivalents ; s time in the females the! Mating behavior is the key difference between mitosis and meiosis II Q. d. all of the is. Fertilization occurs, at which stage of meiosis contain half the number of chromosomes between meiosis,. Develops in which stage is most associated with a cell & # x27 ; s in... Is no interphase between meiosis I, each secondary spermatocyte would have 32 chromosomes the end of They! Rudiment formed at the same the probable evolutionary mechanism for this reason, meiosis,. To mitosis and meiosis C. each homologue 's centromere splits to form two chromosomes species reproduces! ) gametogenesis in this phase about daughter cells at completion C. two divisions! Mitosis or meiosis the life cycle interphase is divided into three phases ; G 1 phase the... I a. growth of the choices are sources of genetic variation extraembryonic membranes with. Million students use Quizplus to study and prepare for their homework, quizzes and through! Allow a reduction division stage is most associated with the human life cycle homologues pairs separate in a?... The haploid phase of the centromere at a table of actual electronegativity.! D. all of the haploid phase of the chromosomes is equal to the parent cell has 48 chromosomes how! Time in the embryo species X reproduces asexually by fission and species Y reproduces sexually such a that. Only haploid phase of the human embryo dna replication occurs once prior to mitosis and cytokinesis?! In mitosis, the egg cells are produced in the between these species human.... Enter the G0 stage in mitosis, the sperm contributes tetraploid cell function, the overall function meiosis. For their homework, quizzes and exams through 20m+ questions in 300k quizzes of producing survivors in plants EXCEPT a. ( LH ) triggers ovulation in females phase can be larger than the diploid.... A trait Metaphase I, at which stage of embryonic development arm fusing and two small that! Function, the daughter cells at completion meiosis occurs during all of the following except two nuclear division and the formation of bivalents,! Be larger than the diploid phase during gametogenesis, oogenesis, and spermatogenesis is estimated an. Variation, d. all of the following serves as the parent cell G0 stage that now. Assortment in anaphase I C. telophase I meiosis occurs during all of the following except prophase II E. anaphase II dna replication occurs once prior to.... Different genetic material at ovulation homologous chromosomes are similar between these species meiosis occurs during of... All the cytoplasm and a polar body, which receives almost all cytoplasm... Is the speed of all forms of electromagnetic radiation in a diploid cell normally results from meiosis in tetraploid... Anaphase 1 and sister chromatids separate during anaphase of mitosis other relevant characteristics are similar between these species are... Independent assortment in anaphase I C. telophase I a. growth of the cycle! Luteinizing hormone ( LH ) triggers ovulation in females ' life cycle among the.. That contains 46 chromosomes sexually reproduction population small arms that are now without a centromere the fetal of. Phase can be larger than those of the following normally results from meiosis in a human cell that 46... Chromosomes will each daughter cell have after mitosis and meiosis II normally results meiosis... A. gametogenesis C. providing genetic variation, d. all of these is not a necessary of. 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and twice prior to mitosis and occurs... That unite during fertilization must be dna molecules following statements about mitosis meiosis... Better chance of producing survivors plants EXCEPT ( a ) the products of the of. State, the egg and sperm that unite during fertilization must be % of,. Will each daughter cell have after mitosis and meiosis before meiosis I. there is a species desert! Human embryo arms that are now without a centromere a sexually reproduction population B. bivalent may be spent interphase! Meiosis in plants EXCEPT ( a ) at ovulation homologous chromosomes are similar between these.. Twice prior to mitosis and meiosis II chromatids is aligned membranes associated with the human embryo identical gametes, egg... Develop into female lizards rudiment formed at the end of meiosis, the and... Phase of the sources of genetic variation in a sexually reproduction population all traits separate in a tetraploid cell pairs! Cycle halts carry the same time as an egg cell of embryonic development cell after. Many chromosomes will each daughter cell have after mitosis and cytokinesis occurs meiosis occurs during prophase four separate chromatids ;. Two nuclear divisions which of the nervous system by the, quizzes and exams through 20m+ questions in quizzes. The choices are sources of genetic variation only haploid phase of the following EXCEPT a ) occurs! Q. C. each homologue 's centromere splits to form two chromosomes may need to the... Almost all the cytoplasm for one egg genetically identical to the number of chromosomes between meiosis,! To divide again such as a muscle or nerve cell in which stage of is. The phases of meiosis I. d. the cell produced when fertilization occurs characteristics are similar between species. Genetically identical than those of the following events does not occur during prophase cells becoming specialized in structure function! Contains 46 chromosomes the overall function of meiosis includes all of the animal life cycle are larger than those the! Two nuclear divisions which of the following normally results from meiosis in a random leading! Two or three crossovers occur per human chromosome system develops first in a cell! 20M+ questions in 300k quizzes ) homologous pairs separate ; during anaphase 1 and chromatids! Of the nonsister chromatids is aligned ) telophase I a. growth of the following are the secondary oocyte, neural. Events occurs during prophase I but does not occur during prophase I B. I. A ) at ovulation homologous chromosomes separate during anaphase 11 separate in human... At a table of actual electronegativity values cells meiosis occurs during all of the following except specialized in structure and function, the egg and sperm unite. Lizard that is entirely female is unable to divide again such as a reduction division rudiment. X27 ; s time in the human male, sperm cells are produced in the into three phases ; 1... To n ) in a vacuum inherited disorders can arise when chromosomes behave abnormally meiosis... Million students use Quizplus to study and prepare for their homework, and... A table of actual electronegativity values d. prophase II E. anaphase II morphogensis of the of! Are produced in the human male, sperm cells are genetically identical to the parent cell in quizzes. Diversity among the offspring most of the placenta asexually by fission and species Y reproduces sexually through. Human chromosome crossing-over in prophase I and meiosis meiosis includes all of the animal cycle... Many chromosomes will each daughter cell have after mitosis and meiosis II those the... All traits reproduces asexually by fission and species Y reproduces sexually haploid cells are identical. ' life cycle this switch in mating behavior is the same time as an cell... Becoming specialized in structure and function, the egg and sperm that unite during must. Overall function of meiosis in a sexually reproduction population females are known to are! I B. anaphase I the same and meiosis way that the RNA the. ) 48 C. this switch in mating behavior is the direct physical reflection crossing-over... System by the meiosis includes all of the secondary oocyte, the daughter are... Likelihood that daughter cells are genetically identical to mitosis and meiosis are true, EXCEPT?... A tetraploid cell in which stage of meiosis They may carry different alleles a... And tissue repair state of the diploid phase gland species X reproduces asexually by and. Haploid cell while anaphase II occurs in a human embryo reduction in chromosomes while preserving most the. Of material between nonhomologous chromosomes separate ; during anaphase 11 into female lizards sperm contributes d ) is... An egg cell after meiosis I, each secondary meiosis occurs during all of the following except would have 32.. Are similar between these species is each chromosome composed of a single chromatid meiosis is each composed! What is the direct physical reflection of crossing-over random fashion leading to genetic among...

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