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Which of the following is NOT an assumption of the Hardy–Weinberg principle for a large diploid population?

easy MCQ 1 mark Class 12 · Biology · Organisms and Populations
  1. A. Random mating
  2. B. No migration (gene flow)
  3. C. Very high mutation rate
  4. D. Large (effectively infinite) population size
Answer
C. Very high mutation rate

The correct answer is C. Very high mutation rate — Select the option that does not belong to the set of assumptions.

Step-by-step solution

  1. List the standard assumptions of Hardy–Weinberg: (i) Random mating, (ii) No mutation, (iii) No migration, (iv) No natural selection, (v) Very large population size.
  2. Compare each option with the list.
  3. Option A matches random mating – it is an assumption.
  4. Option B matches no migration – it is an assumption.
  5. Option C states a very high mutation rate, which contradicts the ‘no mutation’ assumption; therefore it is NOT an assumption.
  6. Option D matches the large population size assumption.
  7. Select the option that does not belong to the set of assumptions.
Common mistake: Choosing an option that is actually an assumption (e.g., random mating) instead of the false one.

Concept tested: Hardy–Weinberg assumptions

Published · How this solution was prepared and checked

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