If race is biological, then "black" isn't one. There is approximately the same amount of genetic diversity within the "black" race as there is within the enti

If race is biological, then "black" isn't one. There is approximately the same amount of genetic diversity within the "black" race as there is within the entire human population. If you define "race" to mean a population with a similar genetic diversity as Caucasians, then there are 4 to 5 black races within Africa alone.