The frequency of a mutant gene in a population is expected to increase, if the gene is

Discuss natural selection and artificial selection. What are the implications of the latter on the process of evolution?

'$A$ brief reduction in size of a population,due to natural calamities,usually leads to random genetic drift'. For this statement,identify the correct example from the following.

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

Select the correct statement regarding mutation theory of evolution.

Name the type of natural selection depicted in the given diagram (Type $I$,Type $II$ and Type $III$).