Ethnic differences among groups that aren't extremely isolated are mostly gibberish perpetuated with cultural identity politics. Offspring tends to go in one d

Ethnic differences among groups that aren't extremely isolated are mostly gibberish perpetuated with cultural identity politics. Offspring tends to go in one direction or another so one group may end up inbred, but a mix is more accurate than compiling the beliefs of human cultures about their genetic traits and isolation from each other.