The bones in the wings of birds and bats are _______ because they derived from a _______ ancestor, while the wings are _______ traits.
A) homologs; common; nonhomologous
B) homologous; common; homoplastic
C) homoplasies; different; homologous
D) homologous; different; homoplastic
E) homologs; common; homologous

Question

Quizplus · Accepted Answer

The bones in the wings of birds and bats are homologous because they both derive from a common ancestor that had forelimbs with bones. However, the wings themselves are homoplastic traits because they evolved independently in birds and bats as adaptations for flight.

The Bones in the Wings of Birds and Bats Are