Human evolution favoured brain over brawn

Metabolite study demonstrates human muscle and brain tissue underwent disproportionate evolutionary change

A new study, published in the open access journal PLoS One Biology, has used metabolites to track evolutionary changes in brain and skeletal muscle tissues. Metabolites are metabolic products or intermediated of low molecular weight (1,500 amu or less), which are associated with the physiological processes that maintain the functionality of body tissues. Changes in the concentrations of these metabolites are thought to be closely related to evolutionary changes in the associated tissues.
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