A) natural selection
B) point mutation
C) arrival of the fittest
D) genetic drift
Correct Answer: A
Solution :
Mutation may produce a new allele not present in the population or may change the frequency of existing alleles. A selectable mutation confers a clear advantage on the mutant strain under certain environmental conditions. Higher frequencies of melanic British moths and DDT resistance in mosquitoes are cited as examples of natural selection as nature selected the mutated forms.
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