Cell Cycle: Stages of Meiosis
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Questions and Answers

How many chromosomes do sheep belonging to the genus Ovis have?

  • 32 chromosomes
  • 54 chromosomes (correct)
  • 46 chromosomes
  • 23 chromosomes

    • What is the total number of chromosomes in humans?

  • 46 chromosomes (correct)
  • 54 chromosomes
  • 40 chromosomes
  • 26 chromosomes

    • How do organisms primarily reproduce?

  • Asexual reproduction
  • Sexual reproduction (correct)
  • Binary fission
  • Budding

    • In sexual reproduction, how many parents are typically involved?

    <p>Two parents</p> Signup and view all the answers

    What is the main process that allows parents to pass their chromosomes to offspring in sexual reproduction?

    <p>Meiosis</p> Signup and view all the answers

    Why do parents need to pass their chromosomes to offspring in sexual reproduction?

    <p>To ensure diversity and reproduction</p> Signup and view all the answers

    What is the major difference between meiosis I and meiosis II?

    <p>Meiosis I involves two rounds of cell division, while meiosis II involves only one round.</p> Signup and view all the answers

    During which phase of meiosis does the reduction of chromosome number occur?

    <p>Anaphase I</p> Signup and view all the answers

    What is the role of cytokinesis in meiosis?

    <p>To produce gametes with a reduced chromosome number</p> Signup and view all the answers

    Which event occurs during prophase I of meiosis?

    <p>Crossing over between non-sister chromatids</p> Signup and view all the answers

    What is the significance of having two rounds of cell division in meiosis?

    <p>To ensure genetic diversity among the resulting daughter cells</p> Signup and view all the answers

    Why does a cell entering meiosis I need to duplicate its genetic material during interphase?

    <p>To create identical copies of each chromosome for distribution to daughter cells</p> Signup and view all the answers

    During metaphase II of meiosis, what aligns in the metaphase plate?

    <p>Individual chromosomes</p> Signup and view all the answers

    What is the main difference between anaphase I and anaphase II of meiosis?

    <p>Homologous chromosomes segregate in anaphase I, sister chromatids segregate in anaphase II.</p> Signup and view all the answers

    What happens to the nuclear envelope during telophase II of meiosis?

    <p>It reforms</p> Signup and view all the answers

    How many daughter cells are produced at the end of meiosis II if one cell underwent meiosis I?

    <p>Four daughter cells</p> Signup and view all the answers

    What is responsible for separating chromosomes into sister chromatids during anaphase II?

    <p>Meiotic spindle</p> Signup and view all the answers

    What aligns in the metaphase plate during metaphase I of meiosis?

    <p>Tetrads</p> Signup and view all the answers

    What process leads to the restoration of the normal chromosome number of a species?

    <p>Fertilization</p> Signup and view all the answers

    What is the name of the single cell formed through the fusion of a sperm and an egg during sexual reproduction?

    <p>Zygote</p> Signup and view all the answers

    Why are the sex cells of diploid organisms usually haploid?

    <p>To prevent the zygote from having double the amount of chromosomes</p> Signup and view all the answers

    Which process reduces the chromosome number from 46 to 23 in sex cells?

    <p>Meiosis</p> Signup and view all the answers

    What can happen if a zygote has double the amount of chromosomes?

    <p>It can prove to be lethal or disastrous for the organism</p> Signup and view all the answers

    Which type of cells undergo meiosis, as opposed to somatic cells that go through mitosis?

    <p>Sex cells or gametes</p> Signup and view all the answers

    What is the ultimate goal of meiosis I and meiosis II?

    <p>Reduce the chromosome number</p> Signup and view all the answers

    How many rounds of division are involved in meiosis?

    <p>Two</p> Signup and view all the answers

    What is the main difference between meiosis I and meiosis II?

    <p>The reduction of chromosome number</p> Signup and view all the answers

    Which unique event in meiosis contributes to enhancing genetic diversity?

    <p>Crossing over</p> Signup and view all the answers

    When does meiosis II take place in relation to meiosis I?

    <p>Immediately after meiosis I</p> Signup and view all the answers

    Why is meiosis I referred to as reductional division?

    <p>It reduces the number of chromosome sets</p> Signup and view all the answers

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