The theory of biological evolution is called Darwinism. This theory was developed by Darwin, the biologist. He said that all the species on the earth are developed through natural selection.
It includes the small and variations of the individual ability that survive, compete and reproduce. This is also called the Darwinism theory. This theory includes the broad concepts of the mutation.
This theory was developed by Charles Darwin in April 1860 in his published work On the origin of species.