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Researchers Deduce Gene Sequence of Mammalian Ancestor

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Researchers Deduce Gene Sequence of Mammalian Ancestor

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Researchers Deduce Gene Sequence of Mammalian Ancestor

Researchers Deduce Gene Sequence of Mammalian Ancestor

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  • <iframe src="https://www.npr.org/player/embed/4246565/4246566" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

Working backward from the genes of living animals, biologists have reconstructed part of the DNA sequence of the mammal from which humans descended. The earliest mammal on the planet was a small rodent-like creature that existed some 70 million years ago. NPR's Joe Palca reports.