Molecular evolutionary biologist Masatoshi Nei says Darwin never proved natural selection is the driving force of evolution — because it isn't. In a cavernous concert hall, before an eager audience of ...

Evolution can be defined as the change in the frequency of a phenotype in a population over many generations. Mutations can be inherited if they occur in DNA that is passed on to the next generation.

Darwin used the theory of natural selection to explain the process of evolution. Evolution is a continuing process of natural selection that leads to the gradual change of an organism over time.