Researchers Deduce Gene Sequence of Mammalian Ancestor 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.
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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

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.