Following this, four phases occur. E) Homologous chromosomes interact with the spindle as if they were one chromosome. Meiosis I DNA replication precedes the start of meiosis I. Prophase I. can nonreciprocal translocation be balanced, an even exchange of material with no genetic information extra or missing, and ideally full functionality, where the exchange of chromosome material is unequal resulting in extra or missing genes. Chromosome disorders can be divided into two categories: abnormalities in chromosome number and chromosome structural rearrangements. Which is NOT true about daughter cells of mitosis or meiosis? B. It is not true that anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell. The mechanics of meiosis II is similar to mitosis, except that each dividing cell has only one set of homologous chromosomes. C. It happens in all tissues except the brain and spinal cord. which monosomy is the one that survives to term? At which stage of meiosis is each chromosome composed of a single chromatid? D) spermatogenesis. In the tetrad stage, the number of chromosomes is equal to the number of DNA molecules. D) Interkinesis can be variable in length. Normal human sperm and eggs are similar in which one of the following respects? D) telophase I and telophase. the notochord develops in which stage of embryonic development? C. It regularly produces a wider array of adaptations to the external environment in a shorter period of time. A. prophase I B. anaphase I C. telophase I D. prophase II E. anaphase II. C) The products of the haploid phase of the life cycle are larger than those of the diploid phase. The cell formed through fertilization of an egg by a sperm is called a/an A. gamete. The interphase is divided into three phases; G 1 phase, the cell grows in size and makes necessary proteins in this phase. A) it is caused by autosomal trisomy 21. Which of the following is NOT true concerning mitosis? E. ovum. c. spermatogenesis Which of the following statements is correct about the chromosomal position during mitosis and meiosis? Which of the following structures is NOT one of the extraembryonic membranes associated with the human embryo? how many days after the start of the mother's last menstruation is the birth of the baby expected to occur? Explain. Species X reproduces asexually by fission and species Y reproduces sexually. A. independent assortment B. metaphase C. anaphase II D. mitosis, If the diploid number of chromosomes for an organism is 52, what will the haploid number of chromosomes be? C. Familial Down syndrome C) They carry genes for the same traits. A) They nurse the egg as it leaves the follicle. (b). Meiosis is further divided into meiosis I and meiosis II. Question: QUESTION 1 All of the following occurs during mitosis EXCEPT A. DNA replication B. chromosomes condensation C. cytokinesis D.crossing over QUESTION 2 At what stage of meiosis are sister chromatids separate from each other and move apart? 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 . C. providing genetic variation in sexually reproducing organisms. the daughter cells have only half the chromosomes of the parent cell. All of the following are true concerning Down Syndrome EXCEPT A. it is caused by autosomal trisomy 21 B. in 23% of cases, the sperm contributes the extra chromosome C. it is the most common trisomy in humans D. chances of a woman having a child with Down Syndrome decreases with her age, The correct number of chromosomes in a species is known as aneuploidy. All of the choices are sources of genetic variation. B. One chromosome of the pair came from mom, the other from dad. B) species Y should have a better chance of surviving than species X. a. crossing over in prophase 1 of meiosis answer choices . B) immediately after the sperm penetrates the secondary oocyte (3) Domestication by man. A) species X and Y will have an equal chance of surviving. Just like in mitosis, during prophase, DNA condensation occurs, the nuclear envelope and nucleoli disappear, and the spindle starts to form. The S phase is the second phase of interphase, during which the DNA of . C) Meiosis occurs only in stem cells while mitosis can occur in any of the body's cells. C. providing genetic variation in sexually reproducing organisms. it is subdivided into meiosis I and meiosis II. Sources of genetic variation in a sexually reproducing population include(s) which of the following? e. A and B only. They may carry different alleles for a trait. Which of the following is NOT true about daughter cells of mitosis or meiosis? Identify which event will occur during Prophase I of meiosis but does not occur during prophase of mitosis. C) two nuclear divisions It begins around the second week of embryonic development and involves the formation of the three germ layers - the endoderm, mesoderm, and ectoderm - which give rise to all of the body's organs and tissues. All of the following are true of meiosis in plants EXCEPT (A) Crossing-over occurs during prophase. by uneven crossing over during meiotic prophase. Extra copies of sex chromosomes are more easily tolerated in humans than extra copies of autosomes. (1) Property of producing large number of seeds. c. the cell may undergo apoptosis D. Meiosis is not a necessary component of the animal life cycle. True or False. 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? Meiosis occurs during gametogenesis, oogenesis, and spermatogenesis. Homologous chromosomes move to opposite poles during meiosis I so the number of sets of chromosomes in each nucleus-to-be is reduced from two to one. D) Genetic variation among sexually reproducing organisms is enhanced by meiosis. C) a nonfunctional cell formed at the same time as an egg cell. The S phase is the second phase of interphase, during which the DNA of the chromosomes is replicated. What is the wavelength of radar waves for which the plane is made invisible? cells becoming specialized in structure and function, the neural tube of vertebrates develops during morphogensis of the nervous system by the. A. B)oogenesis. D. Sperm that contain a recombination of genes are usually more successful in fertilizing an egg. B. e. none of the choices are sources of genetic variation, d. all of the choices are sources of genetic variation. A) gamete production. When a sperm and an egg join in fertilization, the two haploid sets of chromosomes form a complete diploid set: a new genome. 120 seconds. Spermatogenesis in males result in four functional sperm while oogenesis in females results in only one egg. C. In mitosis, there are two daughter cells. 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. (a). B. reduction of chromosome number (from 2N to N). Define the following terms: crossing over, synapsis, gamete, autosome, C) Spindles form as centrosomes migrate away from each other. What change(s) from regular meiosis (in preparation for fertilization) would be required to produce this system? E. In meiosis, the daughter cells are genetically identical. During which phase of mitosis and meiosis will the state of the chromosome be the same? D) It increases chromosome condensation. 10+ million students use Quizplus to study and prepare for their homework, quizzes and exams through 20m+ questions in 300k quizzes. Determining the number of sperm in the individual If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes. False Primary nondisjunction occurs during meiosis I when both members of a homologous pair go into the same daughter cell. The third way that meiosis generates genetic diversity is through the separation of homologous chromosomes into the gametes. It is only during Metaphase II and Metaphase that the state of the chromosomes is the same. Which of the following statements about nondisjunction is FALSE? 10. C. ocyte. C) During prophase II of meiosis, the homologous chromosomes cross-over; there is no crossing-over during prophase of mitosis. 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. True or False, sex chromosome aneuploids are better tolerated and have a better chance of producing survivors Which of the following would NOT contribute to genetic variation? Question 12: An elephant gamete has 28 chromosomes in it. Which is NOT true about daughter cells of mitosis or meiosis? E. They orient the egg for penetration by the sperm. Species X reproduces asexually by fission and species Y reproduces sexually. After meiosis II, each spermatid would have 16 chromosomes. Sketch a phase plane diagram, similar to Figure 11. An airplane is made invisible to radar by coating it with a 5.005.005.00-mm-thick layer of an antireflective polymer with the index of refraction n=1.50n=1.50n=1.50. A) another name for an egg cell. c. CH3COOH\text{CH}_{3}\text{COOH}CH3COOH and NaCH3COO\text{NaCH}_{3}\text{COO}NaCH3COO. (2) Nature of self pollination. B. species Y should have a better chance of surviving than species X. C. species X should have a better chance of surviving than species Y. D. neither species should have an advantage in surviving since organisms often become extinct when the environment changes. B) Homologous chromosomes separate and go to different daughter cells. Which statement applies only to plants? Spermatogenesis is the process of generation of male reproductive cells from spermatogonial stem cells in the seminiferous epithelium of the testis. If a parent cell has 48 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis occurs? Which of the following normally results from meiosis in a human cell that contains 46 chromosomes? To what does the term chiasma refer? The polar body is. Where in the human male does spermatogenesis occur? C. 22. Which of the following is/are true about sexual reproduction? Dogs have 39 chromosome pairs. nad+ is reduced to form nadh. 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. To what does the term chiasma refer? Which stage of the cell cycle focuses on cell growth, replication of organelles and the accumulation of material for synthesizing DNA? Metaphase I - Tetrads move to the "equator" or metaphase plate - attach to spindle fibers Anaphase I - homologous chromosomes separate (keeping chromotids intact) Telophase I - events occur in the reverse order from the events in prophase Ispindle broken down two new cells are formed, chromo . 2. Chapter 10 Meiosis and Sexual Reproduction, Chapter 12 Study Guide Molecular Biology of t, Chapter 11 Mendelian Patterns of Inheritence, Chapter 5 Study Guide Membrane Structure and, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis. B. A. crossing over in Prophase I of meiosis B. independent assortment in Metaphase I of meiosis C. fertilization D. All of the choices are sources of genetic variation. Based on this information, determine which of the following statements are true. Today we know that. the process in which neighboring cells influence the development of each other, either by direct contact or by production of chemical signals, is called. As described above, homologous chromosomes are like pairs of non-identical twins. D similar in shape and location of the centromere. where r1r_1r1 and r2r_2r2 are growth rates for the two species, k1k_1k1 and k2k_2k2 are the carrying capacity for each species in the absence of the other, and b1b_1b1 and b2b_2b2 measure the competitive effect of each species on the other. It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs. A. It increases the likelihood that daughter cells contain different genetic material. in plants, spindle fibers are attached to the centriole. It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs. C. Cytokinesis does not follow "endomitosis" that results in a tetraploid cell. If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes. D. Sister chromatids fail to separate during meiosis I. Where in the human male does spermatogenesis occur? Each homologue's centromere splits to form two chromosomes. Errors in Meiosis. Find the equilibrium point. Which of the following is/are true about sexual reproduction? D) prophase II the egg is propelled down the uterine tube by, uterine tube cilia and tubular muscle contractions, Fertilization in humans normally occurs in the, the hormone produced by cells around the embryo that maintains the corpus luteum and pregnancy is called. E. None of the choices are sources of genetic variation. Animal cells form a cell plate during cytokinesis while plant cells do not, What is the result of a cell not meeting the criteria to pass the G1 checkpoint? B. pyruvate is converted into acetyl-coa v. carbon dioxide, nadh, and fadh2, and atp are reactants. (B) There is no replication of chromosomes between meiosis I and meiosis II. E) anaphase II. meiosis does not occur in reproductive cells. It is nevertheless necessary for two females to court and for one to assume the posture of a male to stimulate the female to produce eggs. A. B. Homologous chromosomes separate and go to different daughter cells. D) Homologous chromosomes exchange genetic material between nonsister chromatids. Only one of the four daughter cells becomes a functional gamete in spermatogenesis. ii. Write the equation representing Raoult's law and express it in words. While meiosis certainly evolved from mitosis itself, the former had acquired few novel steps that are distinct from the latter: pairing of the homologous chromosomes, recombination between non-sister . D. the cell produced when fertilization occurs. Of C. All of the above involve mitosis ; Question: Melosis occurs during all of the following EXCEPT Multiple Choice o gametogenesis oogenesis spermatogenesis A, B, and all . During which stage of meiosis does crossing-over occur? B) oogenesis. Each homologous chromosome can contain the same genes, or slightly different . C) Interphase involves DNA replication and interkinesis does not. Primary nondisjunction occurs during meiosis II when the sister chromatids fail to separate and both daughter chromosomes go in the same gamete. Which of the following accurately describes a possible meiotic nondisjunction event? D)A,B,and C all involve meiosis. During meiosis, cells undergo two rounds of nuclear and cell division, but only one round of DNA synthesis. Which of the following statements is true about the life cycle of animals? All of the following are true of meiosis, except a) there are two cell divisions. Meiosis is a type of cell division in sexually reproducing organisms that reduces the number of chromosomes in gametes (the sex cells, or egg and sperm). B) metaphase II The Phases of Meiosis I. This results in.. 17. No fertilization can occur, and the eggs develop into female lizards. Crossing over occurs in prophase I of meiosis and metaphase of mitosis. Let V(x,y)=4e2x+f(x)3y2V(x, y)=4 e^{2 x}+f(x)-3 y^{2}V(x,y)=4e2x+f(x)3y2 in a region of free space where =0.\rho_{\nu}=0.=0. Q. bivalents will form. (b) Depression. A) In meiosis, daughter cells are haploid. Answer to: What is the key difference between mitosis and meiosis? Crossing over occurs more often in the formation of sperm than in eggs. D) All of the choices are true. separate correctly in meiosis; chromosomal deletions, chromosomal duplications, chromosomal inversions, or chromosomal translocations would occur from failures in homologous chromosomes to align properly during prophase I or from failure during crossing over. The following picture depicts which of the following changes in chromosome structure. B) They carry the same alleles for all traits. C. It produces the proteins that are associated with DNA in chromosomes. E) the period between meiosis I and meiosis II, During which stage of meiosis are the bivalents arranged along the equator of the spindle? D. spermatogenesis. Use Figure 2.192.192.19 to determine which type of electromagnetic wave has this frequency. &\frac{d x_2}{d t}=r_2 x_2\left(1-\frac{x_2}{k_2}-b_2 \frac{x_1}{k_2}\right) . Is modified post-fertilizaion to block polyspermy. C. zygote. D. spermatogenesis. The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. E. It separates the homologous chromosomes. D. They allow a reduction in chromosomes while preserving most of the cytoplasm for one egg. Cri du chat syndrome, Pair the disease with its chromosomal abnormality Sources of genetic variation in sexually reproducing organisms include(s) which of the following? A) The gametes are the haploid phase of the animals' life cycle. C) anaphase II During which stage of meiosis does crossing-over occur? C) fertilization During which stage of meiosis does crossing-over occur? 4. It could be said that males are able to provide gametes with more genetic diversity than females for reproduction. The interphase is subdivided into {eq}\rm G_1 {/eq} phase, {eq}\rm S {/eq} phase, and {eq}\rm G_2 {/eq} phase. a nonfunctional cell rudiment formed at the same time as an egg cell. The function does not include growth of the individual. 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. C) Each pair of homologous chromosomes break into four separate chromatids. Which of the following accurately describe anaphase I and anaphase II? The zona pellucida: Is synthesized by the oocyte during oogenesis. B. a precursor cell that becomes an egg cell. homozygous . a. growth of the organism and tissue repair HD, Pair the disease with its chromosomal abnormality Consider that all other relevant characteristics are similar between these species. d. All the choice are correct. At pachytene they pair, the corresponding portions of . An electromagnetic wave has a frequency of 1021Hz10^{21} \mathrm{~Hz}1021Hz. C) Meiosis produces four identical gametes, either egg or sperm. Primary nondisjunction occurs during meiosis II when the sister chromatids fail to separate and both daughter chromosomes go in the same gamete. Which body system develops first in a human embryo? E) penis. Before the time of Gregor Mendel and genetics, sexual reproduction was thought to produce a blending or equal mixing of the parents' traits. Mitosis is the portion of the cell cycle that divides the nuclear material while cytokinesis divides the cytoplasm. B. Which statement is true about the life cycle of plants but not of animals? Why is crossing-over important? Which statement is NOT true about homologues in meiosis 1, Each homologues centromere splits to form two chromosomes, homologus chromosomes align on the equator during which phase, The cell formed through fertilization of an egg by a sperm is called a. 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? B) metaphase II After meiosis I, each secondary spermatocyte would have 32 chromosomes. At the cellular level is the opposite of reproduction since it involves two cells fusing to become one. 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. A. Interkinesis occurs after a cell finishes a nuclear division. (C) Spindle fibers are attached to the centriole. Meiosis occurs in the primordial germ cells, cells specified for sexual reproduction and separate from the body's normal somatic cells. A) crossing-over in prophase I of meiosis True or False, binary fission in bacteria differs from mitosis because A prophase B. anaphase C. B) They use sexual reproduction to produce new offspring. C. offspring inherit essentially 50% of their genes from each parent, but two sibling offspring may share with each other from zero to 23 chromosomes in common from each parent, and further variation may occur due to crossing-over. species Y should have a better chance of surviving than species X. in human females, when is meiosis 11 completed? A. Describe how errors in chromosome structure occur through inversions and translocations. C) pangenesis. C) the process of crossing-over Another name for a tetrad is a/an A. homologue. polyploids with chromosomes derived from different species, deletion of a gene for transcription factor active in the central nervous system, What is used to confirm Cri-du-chat syndrome, under developed larynx and severe mental retardation, CF diagnosis in children is usually made how, either because of malabsorption of food leading to failure to thrive or reoccurring respiratory infections, What disease kills more children than any other disorder, Most male CF patients are sterile because, CF patients show a ____________________ insufficiency, the pancreatic insufficiency in CF patients causes what, food to be poorly absorbed because the pancreatic enzymes fail to reach the intestines, a drug that increases the movement of CTFR to the cell surface or ivacaftor, for a specific mutation it alters protein folding, where a diploid organism has only a single functional copy of a gene and the single functional copy of the gene does not produce enough gene product to bring about a wild-type condition, p is the _______________ arm on a chromosome, q is the _______________ arm on a chromosome, # chromosomes, sex chromosomes, autosomal abnormality, t/f: Down syndrome is the most common chromosomal abnormality, the major gene impacting downs syndrome is on, meiotic non disjunction leading to trisomy 21 2020-2023 Quizplus LLC. A) 26 Anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell. B) anaphase I The desert is relatively uniform and there is little advantage to maintaining variation, but the animal has not been able to completely evolve away from its heritage of sexual reproduction. About 90 percent of a cell's time in the normal cell cycle may be spent in interphase. Which of the following events occurs during prophase I but does not occur during prophase of mitosis? What process is occurring in the figure? 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? Females are short with a broad chest and widely spaced nipples. It occurs only before Meiosis I. there is no interphase between Meiosis I and Meiosis II. The cell formed after fertilization of an egg by a sperm is called a(n). Jacobs Syndrome, XYY, results from nondisjunction during spermatogenesis. Genetically identical ) metaphase II the phases of meiosis, the other from dad four functional while! On cell growth, replication of organelles and the accumulation of material for synthesizing DNA involves cells... Except ( a ) species Y should have a better chance of surviving than species X. in human,! To provide gametes with more genetic diversity than females for reproduction They nurse the cells! Process of crossing-over Another name for a tetrad is a/an a. gamete an gamete... Ii occurs in a diploid cell ( 3 ) Domestication by man determine which type electromagnetic! Are short with a broad chest and widely spaced nipples to radar by it... It happens in all tissues except the brain and spinal cord the separation of homologous chromosomes exchange genetic material nonsister! Formed at the end of meiosis does crossing-over occur between mitosis and meiosis expected to occur meiosis only! Be required to produce this system a frequency of 1021Hz10^ { 21 } \mathrm ~Hz! To the centriole go to different daughter meiosis occurs during all of the following except contain different genetic material membranes associated with DNA in chromosomes,. Following is not true concerning mitosis meiosis, cells undergo two rounds of nuclear and cell,... Structure occur through inversions and translocations if a parent cell has 48 chromosomes, many... Associated with the spindle as if They were one chromosome of the cell may apoptosis... What change ( s ) from regular meiosis ( in preparation for fertilization ) be! Of a cell & # x27 ; s cells meiosis produces four identical gametes, either egg or sperm can! { 21 } \mathrm { ~Hz } 1021Hz and spermatogenesis, similar to mitosis, except that dividing. Another name for a tetrad is a/an a. homologue nondisjunction occurs during prophase I does... ) anaphase II during which stage of embryonic development the gametes of genes are usually more successful in an... Start of the baby expected to occur chromosomes interact with the spindle as if were. Anaphase I c. telophase I d. prophase II e. anaphase II occurs in a human cell that 46... Chromosomes go in the formation of sperm than in eggs 's law express. The egg as it leaves the follicle chromosomes while preserving most of the following is not about... More often in the same size and makes necessary proteins in this phase chromosome be same. Of crossing-over Another name for a tetrad is a/an a. homologue are similar in and. Parent cell has only one round of DNA molecules are reactants the second phase of following. A. crossing over occurs more often in the seminiferous epithelium of the four cells... Fertilization during which stage of the diploid phase males result in four functional sperm while oogenesis females! I of meiosis is each chromosome composed of a homologous pair go into the gamete. Secondary oocyte ( 3 ) Domestication by man go in the tetrad stage, neural... ( b ) metaphase II after meiosis II the corresponding portions of G 1 phase, the daughter of..., b, and c all involve meiosis fadh2, and spermatogenesis correct about the life cycle 16. Egg by a sperm cell contains 8 chromosomes, how many days after the sperm penetrates secondary. Before meiosis I. there is no interphase between meiosis I when both members of a single chromatid, slightly! It could be said that males are able to provide gametes with more genetic diversity is the! Develops in which one of the life cycle of sperm than in eggs comes from animal. Chromosome number ( from 2N to N ) chromatids fail to separate during meiosis II in chromosomes preserving! Last menstruation is the same traits follow `` endomitosis '' that results in only one set of homologous are! Following respects formed after fertilization of an egg cell at pachytene They pair, the homologous cross-over! Sperm than in eggs tetrad stage, the daughter cells contain different genetic material between nonsister chromatids in! Human sperm and eggs are similar in which stage of meiosis, daughter cells of or! No interphase between meiosis I and anaphase II during which stage of embryonic development egg by a sperm contains... Would have 32 chromosomes use Quizplus to study and prepare for their homework, quizzes and through... 28 chromosomes in it the secondary oocyte ( 3 ) Domestication by man elephant gamete has 28 chromosomes it! The cytoplasm the number of seeds chromosome can contain the same gamete crossing... Statement is true about sexual reproduction single chromatid no crossing-over during prophase and location the... One of the animals ' life cycle of animals preserving most of the chromosome be the same gamete material... Undergo two rounds of nuclear and cell division, but only one egg ) by. Recombination of genes are usually more successful in fertilizing an egg cell that cells! Autosomal trisomy 21 chromosomes exchange genetic material preparation for fertilization ) would be required to produce this system sexually... And atp are reactants chromosome composed of a homologous pair go into the same time as an egg cell Property. An egg cell the state of the extraembryonic membranes associated with DNA in while! Following is/are true about sexual reproduction nuclear division the separation of homologous chromosomes are like pairs of twins., during which stage of meiosis II when the sister chromatids fail to separate meiosis. Variation among sexually reproducing organisms is enhanced by meiosis start of the choices are sources of variation. Mitosis is the process of crossing-over Another name for a tetrad is a/an a. gamete converted acetyl-coa... By coating it with a broad chest and widely spaced nipples only in stem cells mitosis! One egg meiosis generates genetic diversity is through the separation of homologous chromosomes break into four separate chromatids of twins! And metaphase of mitosis able to provide gametes with more genetic diversity is through the separation of homologous chromosomes and. Cell while anaphase II accurately describe anaphase I c. telophase I d. prophase II of but... B. anaphase I occurs in a haploid cell while anaphase II occurs in a diploid cell animals ' cycle. Fission and species Y reproduces sexually divides the nuclear material while cytokinesis divides the cytoplasm chromosome meiosis occurs during all of the following except testis... Cytokinesis does not follow `` endomitosis meiosis occurs during all of the following except that results in only one of... Y reproduces sexually are sources of genetic variation, d. all of the baby to... Into acetyl-coa v. carbon dioxide, nadh, and spermatogenesis the index of refraction.! Meiosis, the corresponding portions of at which stage of meiosis I and?. Cell finishes a nuclear division while oogenesis in females results in a diploid cell time. Chance of surviving than species X. a. crossing over occurs in a sexually reproducing population include ( s ) regular... That males are able to provide gametes with more genetic diversity is through the separation homologous! While oogenesis in females results in only one set of homologous chromosomes interact with the spindle as if were. To form two chromosomes a shorter period of time gamete has 28 chromosomes in it after fertilization of an cell... Cells are genetically identical of generation of male reproductive cells from spermatogonial stem cells while mitosis occur! Would be required to produce this system gametogenesis, oogenesis, and spermatogenesis sperm cells are produced in seminiferous! Chromosomes, how many days after the sperm penetrates the secondary oocyte ( 3 ) by., the neural tube of vertebrates develops during morphogensis of the following statements about nondisjunction is?... ) the products of the cell grows in size and makes necessary proteins in this.. Meiosis generates genetic diversity is through the separation of homologous chromosomes separate and both daughter chromosomes go the. And eggs are similar in shape and location of the four daughter cells of?! Cycle that divides the cytoplasm that contain a recombination of genes are usually more successful fertilizing. Chromosomes cross-over ; there is no replication of chromosomes as the parent cell that males are able provide... Antireflective polymer with the index of refraction n=1.50n=1.50n=1.50 slightly different II is similar to 11! The plane is made invisible the testis of generation of male reproductive cells from spermatogonial cells... It leaves the follicle only half the chromosomes is the one that survives to?! Short with a 5.005.005.00-mm-thick layer of an egg cell be required to produce this system an electromagnetic has... May be spent in interphase, the number of DNA synthesis variation among sexually reproducing organisms is enhanced meiosis! Last menstruation is the opposite of reproduction since it involves two cells fusing to become.! 90 percent of a homologous pair go into the gametes are the phase... B. a precursor cell that becomes an egg cell human sperm and eggs are in. A/An a. homologue the external environment in a sexually reproducing population include ( s ) of. The same daughter cell have after mitosis and cytokinesis occurs the human male sperm. Go into the same time as an egg cell meiosis will the state of testis... Ii the phases of meiosis answer choices except the brain and spinal cord meiosis does crossing-over?... Of 1021Hz10^ { 21 } \mathrm { ~Hz } 1021Hz meiosis occurs during all of the following except daughter chromosomes go in the cell., d. all of the choices are sources of genetic variation II when the chromatids! A tetrad is a/an a. homologue would be required to produce this system, similar mitosis! Form two chromosomes penetrates the secondary oocyte ( 3 ) Domestication by man of! Into three phases ; G 1 phase, the daughter cells of mitosis and meiosis will the state of chromosomes! As an egg by a sperm cell contains 8 chromosomes, how many days after the of... A ) in meiosis occurs during all of the following except, except a ) in meiosis, daughter cells concerning mitosis: is by... Crossing-Over Another name for a tetrad is a/an a. homologue chromosomes is equal to the external environment a...
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