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

question 1

Multiple Choice

An earthquake decimates a ground-squirrel population, killing 98% of the squirrels. The surviving population has broader stripes, on average, than the initial population. If broadness of stripes is genetically determined, which of the following processes most likely caused the change?

• A) directional selection
• B) disruptive selection
• C) a founder event
• D) a bottleneck effect

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