In the OJ trial DNA was not used to determine the “race” of the attacker, it was used to IDENTIFY the attacker. It was either OJ Simpson or his previously unknown identical twin with the exact same DNA.
DNA can be used for “racial” classification, but only as a % chance. In other words, you count up the markers most associated with different human populations and you can get an estimate that the person whose DNA you found is, lets say, 80% likely to be of Asian descent.
And by definition of the many races found to exist right on this very day upon this earth means simply they could not have all come from only two flesh beings? Correct?