Certified Wireless Design Professional (CWDP) Practice Exam

Which observation most directly supports Darwin's idea of common descent?

Closely related species share inherited structural features even when those features serve different functions Every organism is perfectly adapted to its environment All mutations are beneficial Allele frequencies remain constant in every population

Correct Answer:

Closely related species share inherited structural features even when those features serve different functions

Explanation:

Homologous features are expected when species inherit traits from common ancestors and later modify them. Common descent does not predict perfect adaptation, universally beneficial mutations, or invariant allele frequencies.

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