Question

You discover an island that occasionally receives one-way migration from the mainland. Assume that migration is the only violation of Hardy-Weinberg Equilibrium for these populations, and initially p=0.3 on the mainland and p=0.7 on the island (for allele A1 at a two-allele locus). What will eventually happen to allele frequencies on the island?

Answer 1

The allele frequency on this Island will change with time across generations. Earlier the population in the given Island is under hardy-weinberg equilibrium. Hardy weinberg equilibrium is a law which says that, a population is under a non evolving condition when no mutation, migration, natural selection and genetic drift are acting on the population. The population is large in size and shows random mating.

When a population is under hardy-weinberg equilibrium the allele frequency and genotypic frequency of the population across generation remains same.

But in the question it is given that the population is violating the law of equilibrium by showing migration. Therefore the allele frequency of the population across generations will change.

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