The ancestors of today’s slithery snakes once sported full-fledged arms and legs, but genetic mutations caused the reptiles to lose all four of their limbs about 150 million years ago, according to two new studies.
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from Innovation and Digital Marketing http://www.livescience.com/56573-mutation-caused-snakes-to-lose-legs.html?utm_source=rss&utm_medium=rss
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