Assertion (A): Speciation is the process of formation of a new species from a pre-existing one.
Reason (R): Mutation plays a role in speciation.
Speciation is the process of formation of new species from pre-existing ones.
Factors which can lead to speciation are:
- Genetic drift
- Mutation/ Drastic change in the genes or DNA
- Natural selection
- Geographical isolation
- The assertion is true.
- The reason is true.
So, the correct answer is (a).