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A population will not exist in Hardy-Weinberg equilibrium if:

1. There are no mutations
2. There is no migration
3. The population is large
4. Individuals mate selectively

Correct answer: Individuals mate selectively

Solution

Hardy-Weinberg equilibrium assumes random mating. If individuals mate selectively, allele combinations are not formed at random, so genotype frequencies can deviate from equilibrium. The other choices are conditions that support equilibrium.

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