On Germinal Selection as a Source of Definite Variation

'On Germinal Selection as a Source of Definite Variation' is a scientific paper authored by August Weismann. The main idea of the paper was about the concept of germinal selection, which the author had previously proposed but was now being fully explained. The author argues that this concept is necessary to remove the contradiction in the assumption that adaptations in organisms are produced by accidental variations. The author also believes that variation is directed by the life conditions of the organism and is not predetermined as some have suggested.