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Knovas is onto something here. The entire "E" haplogroup is representative of Caucasoids - or more specifically Eurasians. It's not a negroid haplogroup, since negroids acquired E much later. Haplogroup E, descendent of M168, belongs to Eurasian Adam classification:
Originally Posted by Knovas
"And the first piece of evidence comes from one man in particular, who had a rather important, random mutation on his Y-chrosome between 31,000 and 79,000 years ago. He has been named, rather prosaically, M168.More evocatively, he could be seen as the Eurasian Adam - the great...great-grandfather of every non-African man alive today." Spencer Wells; 2002
"As we look more carefully at the arrangement of branches on the mitochondrial tree, we find that there is a similar pattern - all of the non-African mitochondrial branches descend from a particular branch of the tree trunk, implying that our M168 Adam was pared with an Eve. Thankfully, this Eurasian Eve lived around 50-60,000 years ago, suggesting that she and Eurasian Adam could have met. She is called by the rather mundane name L3 and her daughters accompanied the sons of M168 on their journey to populate the world. Based on the distribution of the descendants of M168 and L3 in Africa today, it is likekly that they both lived in north-east Africa, in the region of present-day Ethiopia and Sudan." Spencer Wells; 2002
"the major sub-sets of Y lineages that arose from the M168 lineage do not trace to an African origin." (Chandrasekar; 2007)