The phenomenon of industrial melanism demonstrates:

What is the primary force of evolution?

The theory of sudden genetic change that applies to species is known as:

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 germplasm theory was proposed by . . . . . . .

The frequency of traits increases when they are ........