Which one of the following was the contribution of Hugo de Vries?

Which of the following is the most accurate reason for the development of resistance to pesticides in insect populations that damage crops?

Natural selection in which more individuals acquire peripheral character values at both ends of the distribution curve is:

Explain the example of insect resistance to pesticides as an instance of natural selection.

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

State the factors affecting the process of speciation.