MCAT Biology Question 174: Answer and Explanation
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Question: 174
9. Which of the following is NOT a necessary condition for Hardy–Weinberg equilibrium?
- A. Large population size
- B. No mutations
- C. Monogamous mating partners
- D. No migration into or out of the population
Correct Answer: C
Explanation:
Hardy–Weinberg equilibrium exists in certain ideal conditions that, when satisfied, allow one to calculate the gene frequencies within a population. The Hardy–Weinberg equation can be applied only under these five conditions: (1) the population is very large; (2) there are no mutations that affect the gene pool; (3) mating between individuals in the population is random; (4) there is no migration of individuals into or out of the population; (5) the genes in the population are all equally successful at reproduction. Thus, from the given choices, only choice (C) is false: monogamy is not a necessary condition for the Hardy–Weinberg equations to be applied.