Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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- Meiosis is an important cellular process for organisms that reproduce sexually. Two lab partners (A and B) are shown this diagram of a meiotic cell and asked to identify its phase. Partner A believes that this cell is in prophase of the first meiotic division. Partner B believes that this cell has moved past prophase of meiosis I and is in a later phase of meiosis. Which partner is correct, and what evidence accurately would defend their belief? Partner A is correct. The chromosomes have clearly replicated during interphase and are beginning to decondense into chromatin. O Partner A is correct. The nuclear membrane is beginning to re-form and centrioles are beginning to migrate to opposite poles of the cell. Partner B is correct. Homologous chromosomes are no longer paired together, so the cell must be in first phase of meiosis II, not meiosis I. O Partner B is correct. The cell plate is beginning to form between the two centrioles, indicating the cell is actually in later phase of…arrow_forwardit is possible that an alternative mechanism for generating germ cells could have evolved. consider meiosis in a germ cell precursor. if the S shape were skipped, whic meiotic devision would no longer be required.arrow_forwardMeiosis produces daughter cells that are ; mitosis produces daughter cells that are diploid / diploid diploid / haploid haploid / diploid O haploid / haploidarrow_forward
- Define these pairs of terms, and distinguish between them. aneuploidy/euploidyarrow_forwardThe phenomenon of crossing over, which occurs in Prophase I, causes: the same allelic combinations as before. the exchange of segments between nonsister chromatids. the separation of homologous pairs. the duplication of tetrads.arrow_forwardMatch each box to one of the descriptionsarrow_forward
- You have discovered a new species of fiah, You look at a karyotype from a normal diploid cell and see 20 chromosomes, Based on this, how many chromosomes would you expect to fee in the gameten and embryos of this specien?arrow_forwardPlease explain (and simply) the process of mitosis and meiosis. What are the differences between them?arrow_forward
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