Humans
Some people have slightly squashed heads thanks to Neanderthal DNA
Many people carry Neanderthal DNA that can affect brain cell growth and the insulation around neurons 鈥� and that may have a small impact on brain performance
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Many people carry Neanderthal DNA that can affect brain cell growth and the insulation around neurons 鈥� and that may have a small impact on brain performance
Some chimpanzee populations gained useful DNA from interbreeding with bonobos, and one may even have become more gentle and 鈥渂onobo-like鈥� in its brain structure and behaviour