The most likely reason for the development of resistance against pesticides in insects damaging a crop is

The peppered moth $(Biston \text{ } betularia)$, the black-coloured form became dominant over the light-coloured form of moth in England during the industrial revolution. This is an example of

The theory of random genetic drift was proposed by

What is the variation of traits among the members of a species called?

Give scientific reasons: Genetic drift is much more likely to change allele frequencies in a small population rather than a large population.

Given below are two statements.
Statement $I$ - In disruptive natural selection,individuals acquire peripheral character value at both the ends of the distribution curve.
Statement $II$ - Industrial melanism is an example of disruptive selection.
In the light of the above statements,select the correct option given below: