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 (B)</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 (C)</p> Signup and view all the answers

What is the main function of meiosis in sexual reproduction?

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

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

<p>Prophase I (D)</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. (C)</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 (B)</p> Signup and view all the answers

What is the final result of meiosis in humans?

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

How does meiosis contribute to genetic diversity?

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

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

<p>Cytokinesis II (A)</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 (B)</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 (D)</p> Signup and view all the answers

How does meiosis contribute to genetic variation?

<p>By randomly assorting chromosomes during Metaphase I and II (D)</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 (D)</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 (B)</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 (C)</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 (C)</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 (A)</p> Signup and view all the answers

Which outcome is directly influenced by meiosis in sexual reproduction?

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

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