Which of the following is a vestigial structure?

Forelimbs

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Skeleton

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Heart

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Tail bone

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Solution

The correct option is D Tail bone
There are many examples of vestigial structures in humans. One specific example in humans would be the coccyx, or the tail bone. Obviously, humans no longer have visible external tails since, the current version of humans do not need tails to live in trees as earlier human ancestors did. However, humans still have a coccyx or tail bone in their skeletons.

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