>People do display distinct genetic clustering based on ancestral geography.
For sure! But I suspect the most meaningful coarse clusters might end up being some large number of divisions of sub-saharan africa and then everyone else. Definitely not the "White", "Black", "Asian" categories people in the states take for granted. And even ignoring the amazing diversity of Africa (compared with the rest of the world), did the Irish become more genetically white when they became culturally accepted as white? Did Latin Americans of European descent become less genetically white when people further North stopped viewing them that way? Why do some races trump others (i.e., why is Barack Obama considered black)? The boundaries of these categories seem very arbitrary and not derived by any rigorous means at all.
I think i have seen this before, it came out basically pretty well aligned with the generally accepted racial groups, except there were i believe 2 groups for sub saharan instead of one group of 'blacks'. Has been a few years since i saw the study so dont quote me on it.
Find the citation please. I'm not even sure what you mean by generally accepted racial groups. In the UK, unlike the US, you would probably distinguish between Indian & Pakistani vs. all other Asians. You might also distinguish Irish as a separate ethnicity and probably would not think of Arabs or Turks as white. This stuff is very culturally dependent and I don't know which set of "racial groups" would be considered canonical.
For sure! But I suspect the most meaningful coarse clusters might end up being some large number of divisions of sub-saharan africa and then everyone else. Definitely not the "White", "Black", "Asian" categories people in the states take for granted. And even ignoring the amazing diversity of Africa (compared with the rest of the world), did the Irish become more genetically white when they became culturally accepted as white? Did Latin Americans of European descent become less genetically white when people further North stopped viewing them that way? Why do some races trump others (i.e., why is Barack Obama considered black)? The boundaries of these categories seem very arbitrary and not derived by any rigorous means at all.