AP Ch 10 Meiosis Outline Quiz

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Meiosis Quizzes & Trivia

Meiosis is the term given to any cell division that results in four daughter cells being produced with exactly half the number of chromosomes as the parent cell. This is evident in such productions as gametes and plant spores. What do you know about it? Take the AP Ch 10 Meiosis Outline Quiz!


Questions and Answers
  • 1. 

    If a sperm cell contains 8 chromosomes, it comes from an animal that has ______ chromosomes.

    • A.

      4

    • B.

      8

    • C.

      12

    • D.

      16

    • E.

      24

    Correct Answer
    D. 16
    Explanation
    If a sperm cell contains 8 chromosomes, it comes from an animal that has 16 chromosomes. This is because during sexual reproduction, each parent contributes half of the chromosomes to the offspring. Since the sperm cell is a haploid cell, it only contains half of the genetic material. Therefore, if it has 8 chromosomes, the animal it comes from must have a diploid number of 16 chromosomes.

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  • 2. 

    If a cell contains 12 chromosomes at the end of meiosis I, how many chromosomes will the daughter cells contain at the end of meiosis II?

    • A.

      3

    • B.

      6

    • C.

      12

    • D.

      24

    Correct Answer
    B. 6
    Explanation
    During meiosis I, the cell undergoes a reduction division where the number of chromosomes is halved. So, if the cell starts with 12 chromosomes, at the end of meiosis I, each daughter cell will contain 6 chromosomes. Meiosis II is similar to mitosis, where the sister chromatids are separated. Therefore, at the end of meiosis II, each daughter cell will still contain 6 chromosomes.

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  • 3. 

    During which stage of meiosis does crossing-over occur?

    • A.

      Prophase I

    • B.

      Anaphase I

    • C.

      Telophase I

    • D.

      Prophase II

    • E.

      Anaphase II

    Correct Answer
    A. Prophase I
    Explanation
    Crossing-over occurs during prophase I of meiosis. This is the stage where homologous chromosomes pair up and exchange genetic material through a process called crossing-over or recombination. This genetic exchange contributes to genetic diversity by creating new combinations of alleles on the chromosomes. Therefore, prophase I is the correct stage for crossing-over to occur.

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  • 4. 

    What is the importance of crossing-over?

    • A.

      It provides extra genetic material for the daughter cells.

    • B.

      It increases the likelihood that daughter cells contain different genetic material.

    • C.

      It produces the proteins that are associated with DNA in chromosomes.

    • D.

      It increases chromosome condensation.

    • E.

      It separates the homologous chromosomes.

    Correct Answer
    B. It increases the likelihood that daughter cells contain different genetic material.
    Explanation
    Crossing-over is an important process that occurs during meiosis, specifically during prophase I. During crossing-over, homologous chromosomes exchange genetic material, resulting in the formation of new combinations of alleles. This increases the likelihood that daughter cells will contain different genetic material, leading to genetic diversity. This genetic diversity is crucial for the survival and adaptation of a species as it allows for the emergence of new traits and enhances the ability to respond to changes in the environment.

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  • 5. 

    If DNA replication has already occurred, the chromosomes consist of sister chromatids held together at a centromere.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    This statement is true because during DNA replication, the DNA molecule is duplicated to form two identical copies called sister chromatids. These sister chromatids are held together at a specific region called the centromere. This allows for the accurate distribution of genetic material during cell division. Therefore, if DNA replication has already occurred, the chromosomes will indeed consist of sister chromatids held together at a centromere.

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  • 6. 

    Synapsis is when a duplicated chromosome begins to pair with its homologue.

    • A.

      True

    • B.

      Fasle

    Correct Answer
    A. True
    Explanation
    Synapsis is the process in which duplicated chromosomes align and pair up with their homologues during meiosis. This pairing is crucial for the exchange of genetic material between homologous chromosomes, known as crossing over. Therefore, the statement that synapsis occurs when a duplicated chromosome begins to pair with its homologue is correct.

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  • 7. 

    The chromosome bivalents are located at the metaphase plate during metaphase I.

    • A.

      True

    • B.

      Fasle

    Correct Answer
    A. True
    Explanation
    During metaphase I of meiosis, the homologous chromosomes pair up to form bivalents. These bivalents align themselves along the metaphase plate, which is an imaginary line in the center of the cell. The correct answer, "True," states that the chromosome bivalents are indeed located at the metaphase plate during metaphase I.

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  • 8. 

    During anaphase I the association between members of a bivalent is disrupted and they separate.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    During anaphase I of meiosis, the homologous chromosomes, which are paired together as bivalents, separate and move towards opposite poles of the cell. This separation is facilitated by the disruption of the association between the members of the bivalent. Therefore, the statement that during anaphase I the association between members of a bivalent is disrupted and they separate is true.

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  • 9. 

    There is no replication of DNA between meiosis I and meiosis II.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    During meiosis I, the cell undergoes DNA replication, resulting in the formation of two identical sister chromatids. However, during meiosis II, there is no further replication of DNA. Instead, the sister chromatids separate, resulting in the formation of four haploid daughter cells. Therefore, the statement that there is no replication of DNA between meiosis I and meiosis II is true.

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