Quote:
Originally Posted by RobotElvis
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All those starving children in Africa will make a very fit species in a million years.
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They may develop a new strand of bacteria in their gut to extract more nutrients for food or something similar so yes...they may end up being able to eat less than the humans you see there today.
There are a few factors which offset this though:
1. It isnt a static population locked to one environment. Humans move from one country to the next all the time. It isnt just starving African genes being passed to each new generation there. Some generations will lack food and some not so much. If we walled off Africa for a million years and starved them all it would be far more likely that they would develop traits to suit that environment.
2. Africans are very numerous. When you have a massive population, genetic drift takes longer to permeate through the entire species. Small populations change much faster than a large one.
I am sure there are quite a few factors that I am not accounting for but you get the idea.