A storm washed five female and five male tiger beetles from the mainland to a new population of tiger beetles. In tiger beetles, having six spots (A) is dominant to having four spots (a). Of the ten beetles that arrived, eight had six spots, but one male and one female were heterozygous for the four-spot allele. If these ten beetles were the only ones to establish a new population without reproducing, the ratio of the genotypes could be quite different in subsequent generations. This change in allele frequencies would be an example of:
O mutation.
O genetic drift.
O convergent evolution.
O natural selection leading to perfect organisms.
O stabilizing selection.
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