Big Brain Gene Found in Humans, Not Chimps
Big Brain Gene Found in Humans, Not Chimps – A single gene may have paved the way for the rise of human intelligence by dramatically increasing the number of brain cells found in a key brain region.
This gene seems to be uniquely human: It is found in modern-day humans, Neanderthals and another branch of extinct humans called Denisovans, but not in chimpanzees.
By allowing the brain region called the neocortex to contain many more neurons, the tiny snippet of DNA may have laid the foundation for the human brain’s massive expansion.
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