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Missing bits of DNA may define humans

Genetic information lost along the way led to bigger brains, spineless penises

6:05pm, March 9, 2011

In evolution as on reality TV, sometimes the biggest loser is really a winner.

Losing 510 chunks of DNA may have enabled humans to develop bigger brains, spineless penises and other human traits, researchers from Stanford University and their colleagues report in the March 10 Nature.

The research is the latest attempt to find genetic factors that make humans human. Previously researchers have searched for genes that humans have but other species do not, but the new study tur

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