To determine which is faster, natural or artificial selection, one might select examples to compare: while wolves and wild jackals branched off from a common ancestor 3.5 million years ago (natural selection), arctic foxes were domesticated within a couple of decades (artificial selection). The oldest moth species appeared in the fossil record around 200 million years ago (natural selection), while the peppered moth changed from a light-colored to a primarily dark-colored one in just 47 years (artificial selection). But this becomes harder when we consider questions like: Is COVID well-adapted to human hosts' What animal or plant has had as much time to adapt to a new environment as COVID has to humans' Is the persistence of dominant genetic disorders best explained by a lack of purification time (i.e. that humans haven't lived in their current environment long enough to purify out harmful alleles that might have once been adaptive) or something else' Very quickly, two major issues...
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