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Question 47 of 70

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

(a) The population is large.
(b) Individuals mate selectively.
(c) There are no mutations.
(d) There is no migration.
Tamil Nadu DgeTamil Nadu HSC (DGE) Board 2020MCQ· 1mImportance★★★★★
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Non-random (selective) mating is one of the classic factors that disrupts Hardy-Weinberg equilibrium.

The Hardy-Weinberg principle predicts that allele and genotype frequencies in a population remain constant across generations only if several idealised conditions hold: a very large population size (to avoid genetic drift), no mutation, no migration (gene flow), no natural selection, and random mating. If individuals mate selectively -- choosing mates based on particular traits rather than at random -- genotype frequencies shift away from Hardy-Weinberg expectations even without any change in allele frequency itself. The other three options (a large po …

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