Thursday, February 10, 2011

Dollo's Law and Frog Teeth

One tree frog species (Gastrotheca guentheri) has redeveloped teeth in its lower jaw whereas all frog species lost similar teeth about 200 million years ago, a contradiction of Dollo's law which claims that species' traits lost to evolution are never regained.
Posted by assurbanipaul at 4:32 PM
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