APFIVE Natural Selection and Bird Beak Adaptation
In a population of island birds, the introduction of a new seed type leads to an increased frequency of individuals with beaks well-suited for consuming those seeds. This observation provides a clear example of which of the following?
A
Natural selection due to dietary resources.
B
Genetic drift affecting beak size and shape.
C
Sexual selection based on beak size and shape.
D
Mutation causing sudden changes in beak structure.
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