Help four gametes are produced from a single meiotic division. Thenumber of chromosomes present in gametes is half that of thenumber of chromosomes present in the organism.< II >Select the option that helps explain how theproduction of gametes through meiosiscontributes to genetic variation in the offspring.4In organisms that reproduce sexually, two sets of chromosomesare present. One set is contributed by the mother while theother set is contributed by the father. Together, the pair ofchromosomes form a 'homologous' pair.Chromosomes are not replicatedduring meiosis.During production of gametes via meiosis, crossing over resultsin the exchange of genetic information between homologousMore cells are formed as a result ofB.cell division by meiosis.chromosomes. The regions at which the two chromosomesoverlap and remain in contact during crossing over is called theschismatic. As a result of crossing over, new types of'recombination' chromosomes are formed and passed on togametes. The figure shows crossing over between a pair ofhomologous chromosomes.The number of chromosomesincreases as a result of meiosis.Recombinant chromosomes areproduced as a result of meiosis.II 葛-111P.>BBBHomologouspairCrosingover7:20 AMP Type here to search4/8/2021

definition the division of a cell in two stages that results in four cells , each with half the…

Select the option that helps explain how the production of gametes through meiosis contributes to genetic variation in the offspring. Chromosomes are not replicated A during meiosis. More cells are formed as a result of cell division by meiosis. The number of chromosomes increases as a result of meiosis. Recombinant chromosomes are D produced as a result of meiosis.

Select the option that helps explain how the production of gametes through meiosis contributes to genetic variation in the offspring. Chromosomes are not replicated A during meiosis. More cells are formed as a result of cell division by meiosis. The number of chromosomes increases as a result of meiosis. Recombinant chromosomes are D produced as a result of meiosis.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter20: The Reproductive System

Section: Chapter Questions

Problem 11RE

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The chromosome constitution number of this individual is 2=6. This drawing represents: a. mitotic metaphase. b. meiotic metaphase I. c. meiotic metaphase II. d. a gamete. e. sixnonhomologous chromosomes.
Explain how the random alignment of homologous chromosomes during metaphase I contributes to variation in gametes produced by meiosis.
Because of the ________ alignment of homologous chromosomes during meiosis, gametes can end up with _________ mixes of maternal and paternal chromosomes. a. unvarying; different b. unvarying; duplicate c. random; duplicate d. random; different
Choose the best matching phrase in the right columnfor each of the terms in the left column.a. meiosis 1. X and Yb. gametes 2. chromosomes that do not differbetween the sexesc. karyotype 3. one of the two identical halvesof a replicated chromosomed. mitosis 4. microtubule organizing centersat the spindle polese. interphase 5. cells in the testes that undergomeiosisf. syncytium 6. division of the cytoplasmg. synapsis 7. haploid germ cells that uniteat fertilizationh. sex chromosomes 8. an animal cell containing morethan one nucleusi. cytokinesis 9. pairing of homologouschromosomesj. anaphase 10. one diploid cell gives rise to twodiploid cellsk. chromatid 11. the array of chromosomes in agiven celll. autosomes 12. the part of the cell cycle duringwhich the chromosomes are notvisiblem. centromere 13. one diploid cell gives rise to fourhaploid cellsn. centrosomes 14. cell produced by meiosis thatdoes not become a gameteo. polar body 15. the time during mitosis whensister chromatids…
Assuming that such a fly would be viable, what would be the sexof a fruit fly with the following chromosomal composition?A. One X chromosome and two sets of autosomesB. Two X chromosomes, one Y chromosome, and two sets ofautosomesC. Two X chromosomes and four sets of autosomesD. Four X chromosomes, two Y chromosomes, and four sets ofautosomes
f chromosomal nondisjunction occurs during meiosis I, what proportionof zygotes formed from the resulting gametes would be aneuploid? (Assume the gametes from the otherparent are normal) a. 0% b. 25% c. 50% d. 75% e. 100%
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in the expermient of following chromosomal dna movement through meiosis, how many chromosomes were present when meiosis I started? How many nuclei are present at the end of meiosis ll? How many chromosomes are in each? What is the ploidy of the DNA at the end of meiosis l? What about at the end of meiosis ll? How are meiosis l and meiosis ll different? List two reason
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