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You've got the right idea. Think of any urban center as the site of a localized mass extinction, and you're even closer. Evolution doesn't always happen slowly.
by rdiddly 10y ago
You've got the right idea. Think of any urban center as the site of a localized mass extinction, and you're even closer. Evolution doesn't always happen slowly. In a mass extinction event it happens quickly.
- Almaviva 10y agoNow consider that in human history, about 40% of men were able to breed. So 30% of the population goes extinct every generation without passing on genes, assuming all women reproduce. So with a few hundred iterations of this kind of 70:30 split, you could see how evolution could happen quite quickly even under normal circumstances.