Organic Evolution of Living Organisms | Biology

The following points highlight the four theories for organic evolution of living organisms. The theories are: 1.  Lamarckian Theory  2. Darwinism and the Theory of Natu­ral Selection 3. Synthetic Theory of Evolu­tion 4. De Vries—The Theory of Mutation. Theory # 1. Lamarckian Theory: Jean Baptiste de Lamarck (1744-1829), a French Scientist, was undoubtedly the first biologist to propose a definite [...]