Question

according to hardy-weinberg theory, what would it mean if the distribution of allelic frequencies within a population shifted over time? a) the population is in evolutionary equilibrium with its environment b) external evolutionary pressure is acting on the population c) random mating is the norm within the population d) a genetic mutation has not taken place and introduced new alleles

Explanation:

The Hardy - Weinberg equilibrium assumes no evolutionary forces at work. A shift in allelic frequencies over time indicates that one or more evolutionary forces such as natural selection, mutation, gene flow, non - random mating, or genetic drift (external evolutionary pressures) are acting on the population.

Answer:

B. External evolutionary pressure is acting on the population