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NEET-UG Biology

Gene frequencies and Hardy-Weinberg problems — practice questions

4 questions in the bank on this idea. Below are 4 of them, exactly as they appear in a test.

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  1. Question 1 · difficulty L1 · recall

    A random change in allele frequency strongest in small populations:

    • A. mutation repair
    • B. genetic drift
    • C. gene flow
    • D. natural selection only

  2. Question 2 · difficulty L1 · recall

    Establishment of a new population by a small number of individuals causing altered allele frequencies:

    • A. stabilising selection
    • B. founder effect
    • C. adaptive radiation
    • D. convergent evolution

  3. Question 3 · difficulty L2 · understanding

    Movement of alleles between populations through migration and reproduction:

    • A. gene flow
    • B. mutation only
    • C. genetic drift
    • D. isolation

  4. Question 4 · difficulty L2 · understanding

    The expression for genotype frequencies in a two-allele Hardy-Weinberg population:

    • A. p + q + r = 0
    • B. p^2 + 2pq + q^2 = 1
    • C. p^2 - q^2 = 1
    • D. 2p + 2q = 1

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