2
AssignmentMultiple Choice

Evidence for Evolution

Question 2 • AFC AP Biology B5

Bird and bat wings are analogous due to their wings. They are homologous because of their forelimbs. How is this difference most likely possible?

Answer
A
Both animals inherited their forelimbs from a common ancestor.
B
Both of their wings followed the pattern of divergent evolution.
C
Both of their wings were inherited from a common ancestor.
D
Both animals had forelimbs that evolved from a pattern of convergent evolution.

Explanation

Birds and bats inherited the basic forelimb structure from a common ancestor, which is why their forelimbs are homologous. Their wings, however, evolved independently as adaptations for flight, making the wings analogous. This independent development is an example of convergent evolution.

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