Adaption

Though I do not believe in the magical life creating properties of evolution the specialization of species obviously does exist. African people survived in their malaria ridden continent though either the sickle cell trait or the blood disorder known as thalassemia. On the other hand they somehow lost lactose tolerance, which seriously hurt their absorption of calcium while in the Americas. Also they face difficulty in getting the vitamin D they need in more temperate climates because of their skin. The Europeans on the other hand are able to get the sun they need in cold climates, and drink milk; but lack any natural defense against Malaria. In these and many other examples of human and animal specialization I contend that this is because of the loss of information, rather than the spontaneous creation of specific DNA. Adaption; humanity, animals, and plants still have to adapt. Whether that change is to accommodate for a colder climate or for a faster predator animals and humans either look to changes in their DNA, or death. I know, as a farmer, that the best way to encourage a healthy herd is to cull the sickly and underweight animals. It can seem heartless, but it is the best way to eventually obtain a herd that is tailored for your property and needs. Though those animals would likely fare poorly in other conditions, having horns bred out of them domestic goats are less suited for dealing with predators. As I mentioned early humans also adapted to the local conditions. I would even hazard a guess that humans became even more inbred, and began to look similar to others in the area due to a basic human desire, to fit in. Is a man likely to choose a bride who looks completely different that his family-tribe? Over time these kinds of choices made each area and tribe look different from the others. Geography was the main limiter of the range of potential marriages. For example: a geographic event in the Bering Straits cut off the American Indians (and their predecessors?) from the rest of the world. Climate changes and even seasonal weather caused the game to migrate, and humans followed.