The Influence of Darwin's Pangenesis on Later Theories.

Although Darwin's Pangenesis received strong criticism and never gained any very wide acceptance, it was of great importance due to its stimulating effect on later work and thought. Nearly every major theory of heredity developed in the late 19th century began with a discussion of Darwin's Pangenesis. Darwin was shown to play a more important role in the history of genetics than hitherto attributed to him by historians through a detailed analysis of the influence of his Pangenesis on de Vries' "Intracellular Pangenesis" and "The Mutation Theory," Weismann's theory of "Continuity of the Germ-plasm," Galton's "A Theory of Heredity" and "Natural Inheritance," Brooks' "The Law of Heredity, Ross's "Graft Theory of Diseases", Haeckel's perigenesis and Kozo-Polyansky's hypothetical version of symbiogenesis. Without Darwin's Pangenesis they would not have the foundation on which they formulated. By comparing these theories, it may be concluded that Darwin's Pangenesis combines all advantages of its sister-theories, and is more valuable, comprehensive and convincing than any other genetical theories yet advanced.