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> claiming that so-called race can be determined from one's DNA is indeed pseudo-science.

That's taking it way too far. Genotyping populations identifies variation, and in cases where populations that have been reproductively isolated for tens of thousands of years (e.g. western Europeans and west/central Africans) are now in proximity, there will be substantial variation that is idiosyncratic to each population.

In the US, reproductively isolated populations were suddenly placed in the same territory, and taboos on inter-racial mating persisted until very recently (50% toleration in the mid-1990s). One can accurately tell whether an American is phenotypically white versus black (or mixed) by DNA.

That isn't to say that our ability to predict accurately black-vs-white will remain. The more race-mixing, the less ability to accurately categorize. We'll instead move to a situation similar to the one in which 'white' people find themselves today, where they are mixes of x percent of a variety of populations and not categorically 'Dutch,' 'Irish,' 'Finnish,' etc.

Race is a sociological concept, yes, but it reflects reality in that people are visibly different. These differences are genetic in origin. It just so happens that in some cases, (e.g. two reproductively isolated and visibly distinct populations suddenly in contact with one another), these social categorizations will map to biological ones. In other cases where there is convergent evolution in terms of physical appearance, they won't.



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