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

Selective (non-random) mating violates one of the core assumptions of Hardy-Weinberg equilibrium, so the population will not remain in equilibrium.

The Hardy-Weinberg principle holds that allele and genotype frequencies in a population remain constant across generations only if several conditions are met: a very large population size (no genetic drift), no migration (gene flow) in or out, no mutation, random mating, and no natural selection acting on the alleles. Options (a) no migration, (c) large population, and (d) no mutations are all conditions that HELP maintain equilibrium, so they are not the answer. Selective (non-random) mating (b), however, means individuals preferentially choose mates based on certain traits/genotypes rather than mating randomly, whi …