A) reproductive isolation
B) induced mutation
C) natural selection
D) geographical isolation
Correct Answer: C
Solution :
Industrial melanism refers to the occurrance of dark (melanic) forms (of insects) in regions with high industrial pollution-where surfaces on which the insects rest are darkened by soot and where atmospheric\[S{{O}_{2}}\]level are high enough to prevent the growth of lichens. The mutant dark forms of insects would not be easily seen and avoid being preyed; thus, the population of dark forms of insects would increase-natural selection being in their favour as compared to lighter forms which would be easily sighted and eaten.You need to login to perform this action.
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