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Question
Human tailbone is a vestigial organ. Explain.
Solution
The vestigial organ is the remains of a structure that was functional in some ancestors but is no longer functional in the organisms.
In humans, many vestigial structures show a relationship to other mammals including the primates. Ancestors of human were having well-developed tailbone as their adaptation was arboreal. But gradually humans got adapted to the terrestrial habitat. So, their human tailbone is reduced (vestigial).
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