Which of the following best describes the mechanism behind the change in beak size in the finch population?

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.

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