| IMPORTANT THEORIES | |
| Theory | Proposed by |
| Germplasm theory | August Weismen |
| Mutation theory | Hugo De Vries |
Inheritence of acquired characters or Theory of use & disuse of organs | Lamarck |
| Germ Theory of development | Karl Von Baer |
| Masaic theory of development | W. Roux |
| Law of equilibrium | Hardy & Weinberg |
| Vitamin hypothesis | C. Funk |
| Theory of catastrophism | Cuvier |
| Natural Selection or Survival of fittest | Darwin |
| Theory of Pangenesis | Darwin |
| Theory of Special Creation | Father Suarez |
| Regulative Theory | H. Driesh |
| Recapitulation theory | E. Hackel |
| Abiogenesis | Von Helmont |
| Biogenesis | Reddi, Pasteur & Spallanzani |
| Theory of Eternity | Hutton |
| Cosmozoic or Interplanetary theory | Ritcher |
| Chemical / Synthetic theory of evolution | Oparin |
