Being born with extra fingers on a hand is called polydactyly. This is more common in some populations in North America than others due to ____.
A. an increase in mutation rate in these populations
B. random mating with other populations in North America
C. migration of people with multiple fingers out of the population
D. a founder effect because their ancestors from Europe carried the alleles
E. natural selection in favor of extra fingers in these populations

D. a founder effect because their ancestors from Europe carried the alleles.From one generation to the next, the frequency of alleles (genetic variations) will remain constant.

What does a population need to do to achieve Hardy-Weinberg equilibrium?

According to the Hardy-Weinberg equilibrium, if favorable influences exist, genetic variation in a population will remain stable from one generation to the next.

What causes population genetic drift?

Genetic drift is a random process that can produce significant population changes rapidly . Recurringly small population sizes, drastic population size reductions known as "bottlenecks," and founder events, in which a new population is created from a small number of people, all contribute to random drift.

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