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Land Pollution - Pesticides and Biomagnificaiton

Higher freque...

Question

Higher frequency of melanic moths and DDT resistance in mosquitoes are examples of :

A

Point mutation

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B

Genetic drift

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C

Natural selection

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D

Survival of the fittest

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Solution

The correct option is C Natural selection
Since melanic moths and mosquitoes resistant to DDT have a higher survival rate, they are better adapted compared to other members of populations and hence are reproductively fit leaving more progeny resulting in their selection by nature
So, the correct answer is 'Natural selection'

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Land Pollution - Pesticides and Biomagnificaiton

Standard XII Chemistry

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