Posted August 26, 2015
low rated
hedwards: They don't exist. There is no gene or set of genes that makes somebody African or European. A typical African has as much in common, genetically, with a European as two Africans or two Europeans do with each other.
If you were to walk from Spain all the way down to the tip of Africa 2 hundred years ago, you would have seen a gradual shifting of skin colors and facial features as you went.
Emob78: Kind of. All humans share the same basic DNA structure, but there are variations and mutations within chromosomes. For instance the Y chromosome in the African haplogroups show several differences from European or Asian chromosomes. It's like frogs or toads. They both share the same amphibian DNA, but there are genetic mutations that helped separate them in certain characteristics that led to their split via evolution and environmental adaptation. If you were to walk from Spain all the way down to the tip of Africa 2 hundred years ago, you would have seen a gradual shifting of skin colors and facial features as you went.
Point being, we're all human, but just like any other species with various branches on the phylum/class/order tree, if you look close enough you will see genetic differences.
And yes, there are differences, but none of those differences are sufficient to make somebody African as they don't appear in all Africans. To date nobody has been able to identify any sequence of DNA that is in all Africans that isn't in other groups. Same goes for the other alleged races, nobody has found any thing like that.