The idea of "survival of the fittest" was given by

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

The diagram given below represents the operation of natural selection on different traits. Choose the correct option.

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

$A$ population splits into two or more groups and these groups occupy different ecological zones. This is known as:

Select the correct statement regarding mutation theory of evolution.