Humans' Big Brains May Be Partly Due to Three Newly Found Genes

The brains of humans are conspicuously larger than the brains of other apes, but the human-specific genetic factors responsible for the uniquely large human neocortex remain obscure. Since humans split from chimps, which have brains roughly a third of human size, the human genome has undergone roughly 15 million changes. Which of these genetic tweaks could have led to big brains?A partial answer that question may have been found by scientists based at Howard Hughes Medical Institute (HHMI). Thes