The human tailbone is an example of a vestigial structure. A vestigial structure is one that is present in an organism but that has a reduced size and little or no function. For example, the human tailbone is tiny and plays no role in balance or locomotion. In contrast, the tailbone in other animals, such as dogs and cats, is prominent and serves a function. Vestigial structures are used to support the theory of evolution. What type of evidence do vestigial structures represent?
A) fossil evidence
B) molecular biology
C) comparative anatomy
D) biogeography
Ans: C) comparative anatomy
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