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Evidence of Change: Vestigial structure: Whale

Grade Levels: 3 - 12
Length: 00:00:17
Website: http://www.uen.org/emedia
Usage rights: Download and retain personal copies in perpetuity.

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Vestigial structures are structures or remnants of structures that do not have a function. Whales and pythons have vestigial hind leg bones embedded in their bodies, illustrating that they evolved from four-legged ancestors.

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