Sexual Life Cycles and Cell Division
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Questions and Answers

What is the term for the process by which homologous chromosomes become closely associated with each other during prophase I of meiosis I?

  • Mitosis
  • Fertilization
  • Genetic recombination
  • Synapsis (correct)

    • What is the term for the site where genetic recombination (crossing over) occurs during synapsis?

  • Tetrad
  • Synaptonemal complex
  • Chiasmata (correct)
  • Homologue

    • What is the result of Meiosis I?

  • Two haploid cells (correct)
  • Four diploid cells
  • Four haploid cells
  • Two diploid cells

    • What is the characteristic of meiosis that distinguishes it from mitosis?

    <p>Two rounds of cellular division</p> Signup and view all the answers

    What is the dominant phase in mammals?

    <p>Diploid phase</p> Signup and view all the answers

    What is the result of fertilization?

    <p>One diploid cell</p> Signup and view all the answers

    What is the result of crossing over between non-sister chromatids in meiosis?

    <p>Genetic recombination</p> Signup and view all the answers

    What is the consequence of nondisjunction during meiosis?

    <p>Gametes with an abnormal number of chromosomes</p> Signup and view all the answers

    What is unique to prophase I in meiosis?

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

    What is the result of meiosis in animals?

    <p>4 cells that develop directly into gametes</p> Signup and view all the answers

    What occurs during anaphase I in meiosis?

    <p>Homologues separate</p> Signup and view all the answers

    What is the significance of meiosis in evolution?

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

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