Parallel evolution: proteins do it, too

Wings, spines, saber-like teeth—nature and the fossil record abound with examples of structures so useful they've evolved independently in a variety of animals. But scientists have debated whether examples of so-called adaptive, parallel evolution also can be found at the level of genes and proteins.

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<p><a href="http://www.physorg.com/news69343251.html">Parallel evolution: proteins do it, too</a></p> <p>Wings, spines, saber-like teeth—nature and the fossil record abound with examples of structures so useful they've evolved independently in a variety of animals. But scientists have debated whether examples of so-called adaptive, parallel evolution also can be found at the level of genes and proteins.</p>