VMMC VMMC Medical Solved Paper-2002

  • question_answer
    Genetic drift operates only in:

    A)  island populations         

    B)  smaller populations

    C)  larger populations

    D)  Mendelian populations

    Correct Answer: B

    Solution :

    Genetic drift (Sewall Wright effect) is the phenomenon of random changes in gene frequencies of a population occurring by change rather than by natural selection. Although genetic drift occurs in all populations but its effects are more marked in very small population.


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