CH 2: Importance of Meiosis
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Questions and Answers

What is the main purpose of meiosis in sexual reproduction?

  • To maintain diploid number of chromosomes
  • To increase the chromosome number
  • To reduce genetic diversity
  • To produce genetically unique gametes (correct)

    • Which cells are formed as a result of meiosis in humans?

  • Triploid cells
  • Polyploid cells
  • Diploid cells
  • Haploid cells (correct)

    • How does meiosis contribute to genetic variation?

  • Through random assortment of chromosomes (correct)
  • By maintaining a constant chromosome number
  • By doubling the chromosome number
  • By reducing the chromosome number

    • What occurs during crossing over in meiosis?

    <p>Homologous chromosomes exchange genetic material</p> Signup and view all the answers

    Why is it important for meiosis to reduce the chromosome number from diploid to haploid?

    <p>To maintain a constant chromosome number across generations</p> Signup and view all the answers

    What is the main function of meiosis in sexual reproduction?

    <p>Introducing genetic variation</p> Signup and view all the answers

    Which phase of meiosis involves the exchange of genetic material between homologous chromosomes?

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

    What is the significance of reducing the chromosome number from diploid to haploid during meiosis?

    <p>It helps in maintaining a constant chromosome number across generations.</p> Signup and view all the answers

    During which phase of meiosis do chromosomes align randomly at the equator before being separated?

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

    What is the final result of meiosis in humans?

    <p>Haploid gametes with unique genetic material</p> Signup and view all the answers

    How does meiosis contribute to genetic diversity?

    <p>By introducing new gene combinations through crossing over</p> Signup and view all the answers

    Which process in meiosis results in the formation of four genetically unique daughter cells?

    <p>Cytokinesis II</p> Signup and view all the answers

    What is the role of chiasmata in meiosis?

    <p>Exchanging genetic material between homologous chromosomes during Prophase I</p> Signup and view all the answers

    What is the significance of reducing the chromosome number from diploid to haploid during meiosis?

    <p>To maintain a constant chromosome number from one generation to the next</p> Signup and view all the answers

    How does meiosis contribute to genetic variation?

    <p>By randomly assorting chromosomes during Metaphase I and II</p> Signup and view all the answers

    What is the primary role of crossing over in meiosis?

    <p>To exchange genetic material between homologous chromosomes</p> Signup and view all the answers

    Why is the introduction of genetic variation important in sexual reproduction?

    <p>To promote adaptation and evolution in a species</p> Signup and view all the answers

    What is the main outcome of meiosis in terms of chromosome number?

    <p>Halving the number of chromosomes compared to the parent cell</p> Signup and view all the answers

    Which phase of meiosis involves the alignment and separation of chromosomes to generate unique combinations?

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

    What is the significance of producing genetically unique daughter cells in meiosis?

    <p>To contribute to genetic diversity in a population</p> Signup and view all the answers

    Which outcome is directly influenced by meiosis in sexual reproduction?

    <p>The genetic diversity of the offspring</p> Signup and view all the answers

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