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It's a historical thing: humans were evolving for much longer time in Africa than in other continents.
by xiphias2 7y ago
It's a historical thing: humans were evolving for much longer time in Africa than in other continents.
- username90 7y agoAll humans have evolved for the same amount of time. It is just that a smaller part of the population decided to emigrate than to stay a long time ago.
- bonzini 7y agoMigration causes a genetic bottleneck that (sort of) resets the counter.
- afiori 7y agoyes, but for much longer in Africa than outside of Africa. If you assume that "diversity" increases mostly steadily over time* then there is much more diversity in Africa than in the rest of the world. * diversity is quite different from evolution