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Meiosis and Cell Division
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Meiosis and Cell Division

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Questions and Answers

What is the main purpose of meiosis in sexually reproducing organisms?

  • To increase the genetic diversity in offspring
  • To double the number of chromosomes in gametes
  • To maintain diploid cells in the organism
  • To reduce the number of chromosomes in gametes (correct)
  • How many rounds of division does a diploid cell undergo during meiosis?

  • One
  • Two (correct)
  • Three
  • Four
  • What is the consequence of a cell having extra chromosomes?

  • It has no impact on cell functioning
  • It leads to the formation of haploid cells
  • It can have substantial impacts on cell functioning (correct)
  • It helps in increasing genetic diversity
  • In humans, how many chromosomes are present in almost every body cell?

    <p>46 chromosomes</p> Signup and view all the answers

    What is the genetic composition of the egg and sperm that unite during fertilization?

    <p>Both are haploid with a single set of chromosomes</p> Signup and view all the answers

    Why is it important for each gamete to have exactly 23 chromosomes?

    <p>To avoid substantial impacts on cell functioning</p> Signup and view all the answers

    What is the chromosome count in a new human that grows from a fertilized egg?

    <p>46 chromosomes</p> Signup and view all the answers

    What characterizes the chromosome count in somatic cells of humans?

    <p>Diploid with two sets of chromosomes</p> Signup and view all the answers

    What is the significance of meiosis in maintaining the correct chromosome number?

    <p>It carefully counts and divides the chromosomes to ensure each gamete has the correct number of chromosomes.</p> Signup and view all the answers

    What distinguishes the genetic content of somatic cells in humans?

    <p>They are diploid, containing two sets of chromosomes from each parent.</p> Signup and view all the answers

    In what way does meiosis ensure the proper genetic composition of gametes?

    <p>By preventing any errors during cell division that could result in an incorrect chromosome count.</p> Signup and view all the answers

    What is the consequence of an incorrect number of chromosomes in a cell?

    <p>It can have substantial impacts on how the cell functions.</p> Signup and view all the answers

    Why is it crucial for each egg or sperm to have exactly 23 chromosomes?

    <p>To ensure that after fertilization, the resulting human has 46 chromosomes.</p> Signup and view all the answers

    What is the role of meiosis in sexually reproducing organisms?

    <p>To generate genetic diversity in offspring by mixing parental chromosomes.</p> Signup and view all the answers

    How does meiosis contribute to maintaining the genetic stability of a species?

    <p>By ensuring that gametes have a consistent number of chromosomes within a species.</p> Signup and view all the answers

    What is the outcome of combining an egg with 23 chromosomes with a sperm containing 23 chromosomes?

    <p>It produces a fertilized egg with a diploid chromosome count.</p> Signup and view all the answers

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