Gene activity sets humans apart from extinct hominids
Methylation differs between modern people, Neandertals and Denisovans
BARE BONES Differences between the skeletons of modern humans (back) and Neandertals (front) may stem from the way the groups use some genes involved in bone growth. Chemical modifications of DNA may have dialed down the activity of these genes in Neandertals, leading to stocky frames.
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