जॉइन Examsbook
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प्र: When is genetic drift a major factor in evolution?

  • 1
    When there is male competition
  • 2
    When there is artificial selection
  • 3
    When there is no selective pressure
  • 4
    When there is disruptiveselection
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उत्तर : 3. "When there is no selective pressure"
व्याख्या :

Answer: C) When there is no selective pressure Explanation: Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance.   When is genetic drift a major factor in evolution is * When there is low gene flow. * When there is no selective pressure. * When there is a bottleneck.

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