Human DNA - unknown
You have probably come across the fact that the human DNA (genome) is just 1.2 percent different than that of chimpanzees. The inference is that we are almost the same. We are similar physically, but we have a gene mutation which makes cognition (thinking), language, and speech possible. For the first time, science has proof that Homo sapiens have a special protein called "neuropsin," which permits learning and memory.
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