Two Populations of Mice Exist on Either Side of a River.After

question 186

Multiple Choice

Two populations of mice exist on either side of a river.After a bridge is constructed across the river, the two populations come to resemble each other more.What is the most likely explanation for this?

• A) Stabilizing selection
• B) Directional selection
• C) Gene flow
• D) Genetic drift
• E) Nonrandom mating

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