Do you think if every one on the planet moved to the same place but still only m

Question:

Do you think if every one on the planet moved to the same place but still only married their race....?

that within a couple of million years or whatnot their descendents would all start to look the same?

Best Answer - Chosen by Asker: When you talk about a couple of million years I would say yes. Differing races are the result of slight variations in the evolutionary process. Humans essentially adapted to their environment. With a lack of environmental variation, over the course of that much time humans would follow a similar evolutionary process creating what we would deem a single race.

OK I have given this question a little more thought and wanted to return and add to my above response. When you say that the two seperate races will only breed among their own lines after several million years it is likely that the two races would look very different indeed. In fact its likely they could become completly different species. Different types of Finches for instance that share common ancestors but live on different islands in the pacific have evolved so far away from their common ancestor that they can no longer breed with each other. Evolution works through random mutations that increase a species chances of survival. Random mutations are sometimes bad, for instance if a human was born with larger than normal ears, that person would find it more difficult to find a mate and procreate, and in turn pass on the big ears gene, so to speak. However a human born taller than usual or with higher athleticism would be more likely to find a mate and pass on his genetic code. After millions of years Its likely that the progression of these two seperate groups would move in different directions. After all we are talking about millions of years here. It was just a few million years ago that homosapiens didnt even exist, we were basicly a common ancestor of ourselves and neanderthals...