Mystery Why Birds Don't Have Teeth Finally Solved: Inactive Genes

December 15, 2014 1:06 PM

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Genetic data of 48 bird species and an American crocodile reveal why modern day birds do not have teeth despite that they evolved from toothed ancestors.(Photo : Berit Watkin)

Genetic data of 48 bird species and an American crocodile reveal why modern day birds do not have teeth despite that they evolved from toothed ancestors.

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