Functionalism is the theory that all characteristics of a society serve a function and are necessary for the survival of that society. Darwins theory on natural selection is that more and more individuals are produced, in every generation, and they are able to survive. Phenotypic variation is something that exists in these individuals and the variation is genetic. The individuals with genetic traits are better suited for the environment and they will survive. These two theories are linked because in order to have a functional society, you need to have people. Also, both theories are surrounded by survival and how to do so. These theories show how people grow and adapt in order to function and get all the necessary tools to survive in a society.
