Meiosis and chromosome mutations

Meiosis and chromosome mutations Quiz

Spec 2.3 · Edexcel A-Level Biology B: Quiz

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  1. 1. A cell with 2n = 20 undergoes meiosis. How many chromosomes are in each resulting cell?

    • A. 5
    • B. 10
    • C. 20
    • D. 40

  2. 2. In which stage does crossing over occur?

    • A. Prophase I
    • B. Metaphase I
    • C. Anaphase II
    • D. Telophase II

  3. 3. A species has a haploid number of 5. Ignoring crossing over, how many different gametes can independent assortment give?

    • A. 10
    • B. 25
    • C. 32
    • D. 5

  4. 4. A girl has 45 chromosomes, with a single X and no other sex chromosome. What is the term for this condition?

    • A. Translocation
    • B. Polysomy
    • C. Polyploidy
    • D. Monosomy

  5. 5. How does a translocation differ from non-disjunction?

    • A. A translocation changes the chromosome number but non-disjunction does not
    • B. A translocation moves a section to a non-homologous chromosome without changing chromosome number, whereas non-disjunction changes the number
    • C. Both only occur in mitosis
    • D. Non-disjunction occurs only in body cells

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