uestion 3 Question 3 of 4 3. What distinguishes Meiosis I from Meiosis II? Crossing over does not occur during Meiosis I, but does in Meiosis II. Meiosis I separates sister chromatids while Meiosis II separates homologous chromosomes. Meiosis I results in identical genetic material while Meiosis II results in recombined DNA. Meiosis I separates homologous chromosomes while Meiosis II separates sister chromatids. < Previous Next >
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Step 1: Meiosis I is the first division of meiosis, where homologous chromosomes are separated. Show more…
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Meiosis I separates homologous chromosomes, each of which comes from one parent and contributes to genetic variation via the law of independent assortment and via crossing over. Cells at the beginning of meiosis I are diploid and cells at the end of meiosis I are haploid. In contrast, meiosis II separates sister chromatids, each of which started out as a single chromosome. Cells at the beginning of meiosis II are haploid and at the end of meiosis II are diploid. This process contributes to genetic variation by creating gametes that are subject to random fertilization, independent assortment, and crossing over.
Madhur L.
During meiosis, the chromosome number: a) is doubled b) is reduced by half c) remains the same d) becomes diploid 2. How many times do cells divide during meiosis? _______ 3. When a sperm cell and an ovum/egg merge, they undergo the process of fertilization and give rise to a (gamete, zygote), which is (haploid, diploid). 4. Describe the purpose of meiosis ___________________________________________________________________________ 5. How many times does the cell divide during Meiosis? ___________________________________________________________________________ 6. What kind of cells are produced at the end of meiosis? ___________________________________________________________________________ 7. Briefly describe the difference between prophase I & II. ___________________________________________________________________________ 8. Mitosis v. Meiosis - Explaining Differences: Explain what happens in each of the following processes in Meiosis that is different from Mitosis and why the difference is important. Prophase I (in Meiosis I): Metaphase I and Anaphase I (in Meiosis I): 9. What is independent (or random) assortment, and when does it happen during meiosis? 10. What is crossing over, and when does it happen during meiosis?
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