Human DNA gives mice bigger brains

February 23, 2015 6:27 AM

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Human DNA gives mice bigger brains

The human genetic code is very similar to the genetic code of our closest living relative -- the chimpanzee -- sharing around 95 percent. Of all the differences, however, one is particularly interesting: the human brain is a lot bigger than the brain of a chimp. The brain of a chimp weighs, on average, 384 grams, whereas a human brain is more than triple that, at 1,352 grams.

Although it's not brain size alone that accounts for human intelligence, it certainly plays a pretty important role -- and now, researchers at Duke University have identified the DNA sequence that may be responsible for that particular evolutionary deviation.

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