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

question 47

Multiple Choice

An earthquake decimates a ground-squirrel population, killing 98% 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

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