Originally Posted by
DaCougarMech
no duh. and what do you think environmental changes act on? the environment acts on traits of organisms to test its survival ability. if a species did not vary in alleles, it would be completely decimated. what's the source of variability? the source of all variability is mutation. without mutation, there would be no such thing as red, blond, brunette hair. it would all be the same color
and mutation is perfectly natural. it goes hand in hand with evolution because without mutation causing genetic variability, a single virus could wipe out an entire species. but with mutation, organisms that possess a different gene would survive and live to reproduce, making that entire species different now because of natural selection.
read a science book, siris. everything i say is in there
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