An Earthquake Decimates a Ground-Squirrel Population, Killing 98 Percent of the Squirrels

An earthquake decimates a ground-squirrel population, killing 98 percent of the squirrels. The surviving population happens to have broader stripes, on average, than the initial population. If broadness of stripes is genetically determined, what effect has the ground-squirrel population experienced during the earthquake?

A) directional selection
B) disruptive selection
C) a founder event
D) a genetic bottleneck
E) gene flow

Correct Answer:

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