The Hardy-Weinberg principle predicts that allele frequencies in a population remain constant when
Athere is natural selection
Bthere is no migration, mutation, selection, or drift, and mating is random
Cthe population is small
Dany one allele has fitness advantage
Answer & Solution
Correct answer: B. there is no migration, mutation, selection, or drift, and mating is random
Hardy-Weinberg holds when none of the four evolutionary forces is acting AND mating is random AND the population is large. Any deviation from the predicted frequencies signals one of those conditions is being violated — evidence of evolution.
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