Which of the following best describes the mechanism behind the change in beak size in the finch population?
A) The formation of two new finch species from a single parent species
B) A change in gene frequencies in the finch population due to selective pressure from the environmental change
C) A new allele appearing in the finch population as a result of mutation
D) The achievement of dynamic equilibrium in the finch population as a result of homeostasis
Answer: B) A change in gene frequencies in the finch population due to selective pressure from the environmental change
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AP Biology
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