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(11-16-2016, 06:14 PM)parvez Wrote: There are some chances of mutations that may have occured during the evolution of ancient man to modern one. Otherwise it is really hard to have achieved that much intelligence in only around 100000 years or so.
Africans = pure Homo sapiens
Eurasians = Homo sapiens with slight mixture from Neanderthals and Denisovans
The Eurasian Homo sapiens got mutated thanked to the mixture from other non-sapiens humans even it was minimal.
I think the non-Homo Sapien admixture to the Eurasians (especially Europeans) had some significant mental and slight physical defects such as the development of schizophrenia, bipolar disorder, and obesity-linked diseases. This is not due to either the Neanderthal or the modern human, but because of the admixture between the two (~2-8% of Neanderthal in modern Europeans), so it is not that minimal.
Africans, on the other hand, never had any of the aforementioned conditions until the Eurasians intermixed.