"The extent of evolution you can see in Black people vs white people. There are many genetic differences."
EoM, I'd suggest you take some serious biology and anthropology courses before you start lecturing on genetics here. Native Americans lived farther north than white Europeans for a long time too, yet their skin is the same color as the Native Americans that lived along the Amazon equator. The differences between black, white, asian, native American, or Pacific region are very superficial. If there were really many genetic differences, they would not be able to interbreed. That's where evolution of species gets complicated. Since you mention dogs, clearly the physical and mental differences of dogs are through selective breeding. Although size will be an issue in some cases, genetically they can all interbreed. And dogs can interbreed with wolves and coyotes, but not with foxes. However, birds aren't able to interbreed like dogs (speaking of each as a collective). We've had chickens, ducks, and geese together on the farm. They look very similar, but we haven't had any gucks or dickens. Robins and sparrows don't cross. We've had sheep and goats. They don't cross. Genetically, there are mules, ligers, and other offspring that cross genetic barriers, but they're sterile.