If the different sub species, races had stayed apart for longer would they have become really different species (could not inter breed) If so what differences do you think would evolve in each isolated race?
Funny how most of you don't know what you are talking about, but say it with so much conviction
Most people would say the differences in race is mainly skin color.
Skin color is determined by the population's location in relation to the equator. Darker skin protects the body in hot climates. Lighter skin is needed closer to the poles to facilitate the production of vitamin D.
Stick a fair skinned person on the equator and eventually their descendants would have dark skin.
When you compare DNA, which is the real determination of how different we are, there's no difference. All humans can interbreed.
Race as most define it is purely a social construct. Here's an example. Why is President Obama called 'Black?" He's mixed race so could also be called "White" The reason is the social practice called hyper descent. A mix raced baby is assigned the race of the non dominant parent. It's a social classification and has nothing to do with anthropology or DNA.
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