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 Random Article
Science News:
Gene tweak led to human big toe: decrease in GDF6 protein helped enable upright walking.

Small tweaks of one gene may have helped humans to walk upright.

Losing a genetic switch that increases production of a protein called GDF6 may have created the big toe and helped shape the human foot for bipedalism, scientists propose in a paper published online January 7 in Cell. "This change is one that makes all humans different from other animals," says developmental geneticist David Kingsley, a Howard Hughes Medical Institute investigator at Stanford University.

The gene...

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