The first experiment on chemical evolution and origin of life was carried out by:
Urey and Miller
Oparin and Haldane proposed the chemical theory of evolution and origin of life which was later experimented by Urey and Miller.
Watson and Crick developed the structure of DNA.
Beadle and Tatum proposed hypothesis of “One gene, one enzyme”.
The Darwin-Wallace theory concluded that species as a whole demonstrate descent with modification from common ancestors, and natural selection is the sum of the environmental forces that drive those modifications.