Answer :

Asked by Annette | 17th Mar, 2010, 01:08: PM

Expert Answer:

An organ that was once useful in an animal's evolutionary past, but now has no apparent nor predictable function. Such organs have become small and have lost their use because of evolutionary change.

Eg. - The appendix and the ear muscles of humans

Answered by  | 20th Mar, 2010, 05:33: AM

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