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Tuesday, May 23, 2006

New Clues To Limb Formation And Loss In Sea Mammals


Rootstown OH (SPX) May 23, 2006
Researchers from the Northeastern Ohio Universities College of Medicine have revealed the genetic basis behind one of the best-documented examples of evolutionary change in the fossil record: how whales lost their hind limbs.

Writing in this week's Proceedings of the National Academy of Sciences (PNAS), Hans Thewissen and his colleagues report that ancient whales--four-footed land animals not unlike large modern dogs--evolved into graceful, streamlined swimmers through a series of small genetic changes during the whales' embryonic development.
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read the rest......
New Clues To Limb Formation And Loss In Sea Mammals

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