Inheritance and Variation Patterns Quiz
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Questions and Answers

What is the primary difference between meiosis and mitosis?

  • Mitosis leads to genetic variation, while meiosis produces genetically identical cells.
  • Meiosis involves two rounds of cell division, while mitosis only has one round. (correct)
  • Mitosis results in the formation of haploid cells, while meiosis forms diploid cells.
  • Meiosis occurs only in reproductive organs, while mitosis occurs in all body cells.

    • During which stage of meiosis does crossing over occur?

  • Metaphase I
  • Prophase I (correct)
  • Telophase I
  • Anaphase I

    • What is the significance of independent assortment in meiosis?

  • It promotes the formation of diploid zygotes during fertilization.
  • It prevents the formation of gametes in reproductive organs.
  • It leads to the random alignment of paternal and maternal chromosomes during metaphase I. (correct)
  • It ensures that homologous pairs stick together during cell division.

    • What can happen if there is a problem with nondisjunction during anaphase in meiosis?

    <p>Formation of gametes with incorrect chromosome numbers</p> Signup and view all the answers

    How does meiosis contribute to genetic variation among organisms?

    <p>By forming haploid cells with unique combinations of chromosomes.</p> Signup and view all the answers

    In Mendelian genetics, what do alleles represent?

    <p>Different versions of a gene for a trait</p> Signup and view all the answers

    What causes a person's unique characteristics?

    <p>The set of genes inherited from parents</p> Signup and view all the answers

    How many pairs of chromosomes do humans have in each somatic cell?

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

    What is the role of centromeres in a chromosome?

    <p>Attach spindle fibers during cell division</p> Signup and view all the answers

    Which type of cells are made in reproductive organs and have one set of chromosomes?

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

    What is the function of alleles?

    <p>Code for different versions of the same gene</p> Signup and view all the answers

    What defines homologous chromosomes?

    <p>Chromosomes inherited from both parents</p> Signup and view all the answers

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