According to anthropology, human race further gets divided in Caucasians, Mongoloids, Aboriginals, Eskimos, Red Indidians and Negro's. How far, is this classification, though maybe anthropologically correct, correct in terms of difference in genes and gene expression. Also what are the reason for the number dominance of Caucasians over other human divisions. Is it at all correct?
put on hold as primarily opinion-based by Remi.b, David, WYSIWYG, iayork, Bryan Krause♦ Sep 11 at 13:53
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There is no genetic basis for these classifications. Most human genetic diversity is in Africa. Diversity only decreases with geographic distance from this continent. There are geographic clines, not the clusters that one might call race. Here are some results from Rosenberg's 2002 Genetic Structure of Human Populations:
- 93-95% of variation occurs within populations
- 3-5% of variation occurs between populations
Local adaptation occurs, such as height and pigmentation but these phenotypes are polygenic and should not lead to binary classifications. There are some very interesting case studies on local adaptation that you should look into. ex)EPAS1 gene and no hypoxia among Tibetans or lactose persistence on three continents
There is no genetic basis for dominance of one population over another.