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"It is not so sure- DNA researches show that so called Homo Sapiens Sapiens do not have any genetiacal heritage of Homo Sapiens Neandertalensis"
I am not sure I understand the point you are making with this statement, however, I will present my viewpoint. Science has only proven that modern humans are genetically connected to the original African Eve. They have yet to make a genetic connection to the original African Adam/Atum for modern humans outside Africa.
What they have proven is that there was an inexplicable change in the Y chromosome inherited by some ethnically African males and almost all other ethnically, non-African males outside Africa. This change first occured after earth's last ice age, in south-central Asia.
Now what dramatic climate changes and human isolation patterns could have caused such an adaptation? Before you answer, consider the climate of South and Central Asia in relation to Africa and the region's proximity to the African continent.
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