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Darwin's finches, which inhabit the Galapagos Islands, originally migrated from mainland South America. The loss of plants producing medium-sized nuts on one island led to the evolution of finches with either small or large beaks and selected against finches with medium-sized beaks. What kind of selective pressure is in action here?

(1 point)

directional selection

genetic drift

gene flow

disruptive selection

1 answer

disruptive selection

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