Enhanced evolution: Scientists find genetic swap changes physical expression

The difference between webbed toes and distinct digits may be the result of not just genetic information, but of how the genes regulate that information. Researchers at the National Institute of Genetics, Research Organization of Information and Systems in Japan found that a small, nonspecific tweak to a mammal's DNA can potentially cause specific and significant physical changes. The scientists recently published the results of their study in the Proceedings of the National Academy of Sciences.

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