In 1859, Charles Darwin set out his exploration on the evolution by natural selection as an explanation for adaptation and speciation 1859. He characterized natural selection as the rule by which each variety of a trait, if valuable, is safeguarded. Another researcher, Alfred Russell Wallace, came to a similar conclusion, but because Darwin was well-known and respected researcher even before he composed On the Origin of Species, Wallace was obscure and unknown, so individuals were more likely to listen to Darwin. Darwin's theory comprised of two key emphases which were varied gatherings of creatures advance from one or a couple of basic predecessors of adaptation. And the component by which this development happens is natural selection.
