There’s more genetic variation within any so-called racial group than between groups, so race obviously has no genetic justification. That's not semantics. Yes it's real, but for social, not genetic reasons.
That is comically retarded. Like do you have any understanding of the words you are using ?
If there's no genetic justification, how would it be possible to trivially determine someone's race just from their DNA ?
Genetic ancestry is determined by correlation with geographic origins and population. In other words, where a set of genetic markers are highly concentrated. It says nothing about race.