Question

Darwin proposed his theory of natural selection on the basis of

Answer 1

Darwin's theory. In 1859, Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

Answer 2

Darwin proposed his theory of natural selection on the basis of the specimens.. He published the theory of natural selection which preaches the survival of the fittest.. He published in the book.. "Origin of species"