Neo-Darwinism n. The theory which holds natural selection, as explained by Darwin, to be the chief factor in the evolution of plants and animals, and denies the inheritance of acquired characters; esp. opposed to Neo-Lamarckism. Weismannism is an example of extreme Neo-Darwinism.
... were practically running current Science. It was 1906; I was fifty; I published my own view of evolution in a play called Man and Superman; and I found that most people were unable to understand how I could be an Evolutionist and not a Neo-Darwinian, or why I habitually derided Neo-Darwinism as a ghastly idiocy, and would fall on its professors slaughterously in public discussions. It was in the hope of making me clear the matter up that the Fabian Society, which was then organizing a series of lectures on Prophets ... — Back to Methuselah • George Bernard Shaw