Subtle change in DNA, protein levels determines blond or brunette tresses, study finds

A molecule critical to stem cell function plays a major role in determining human hair color, according to a new study. The study describes for the first time the molecular basis for one of our most noticeable traits. It also outlines how tiny DNA changes can reverberate through our genome in ways that may affect evolution, migration and even human history.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/j...