Evolution made 'weedy' humans choose brains over brawn

May 28, 2014 1:36 AM

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Evolution made 'weedy' humans choose brains over brawn

A study has found that over the course of evolution, essential molecules had changed even more rapidly in human muscle than in the brain. The rate of change in muscle was 10 times that seen in our closest animal cousin, the chimpanzee.

In contrast, the molecules in the human brain had evolved four times faster.

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