According to Neo - Darwinism theory, which one of the following is responsible for the origin of new species?
Mutation
Use and Disuse
Hybridisation
Mutations together with natural selection
As we have already discussed in Modern Concept of Evolution or Synthetic Theory of Evolution -
The present concept of evolution is a modified form of Darwin’s theory. It is often called Neo-Darwinism. It includes the following factors such as gene mutations, variations heredity, natural selection and isolation. Hence, the correct option is (d).