Writing in Pacific Standard, Science 2.0 fave Dr. Michael White notes something that isn't obvious to the public - if you ask most biologists to identify race, they can't do it.

If you ask anthropologists, sure. Race is an entirely social construct. There have been numerous efforts to make race scientific, based on differences in appearance and such. Caucasoid, Mongoloid, Negroid, etc. were actually not flawed science rationale hundreds of years ago but this concept of race is still perpetuated.

As he notes, biology can tell us all kinds of things about people; genes can match people to within 30 miles of their native village. But objectively, which is to biologically, races don't exist. Unless a redhead is a different race than a blonde.

Why Your Race Isn’t Genetic By Michael White, Pacific Standard