LAMARCKIAN • DICCIONARIO INGLES.COM • Definition of Lamarckian

"Lamarckian" Quotes from Famous Books

... in general the Lamarckian doctrine that each succeeding generation would have new characters added to it by the modification of environmental factors and by the use and disuse of organs and functions. Thus gradually under such selection the species would be improved. But Darwin emphasized selection ...

— History of Human Society • Frank W. Blackmar

... to deal only with the theory of selection, I need not discuss the Lamarckian hypothesis, but I must express my opinion that there is room for much doubt as to the cooeperation of this principle in evolution. Not only is it difficult to imagine how the transmission of functional modifications could take place, but, up to the present ...

— Evolution in Modern Thought • Ernst Haeckel

... comprises just the same number of bones that are present in the short-necked relatives of this form, so that we are justified in accepting as a fact the evolution of the giraffe's long neck by the lengthening of each one of originally shorter vertebrae. The Lamarckian explanation of this fact would be that the earliest forms in the ancestry of the giraffe as such stretched their necks as they fed, and that this peculiar function with its correlated structural modification became habitual. The slight ...

— The Doctrine of Evolution - Its Basis and Its Scope • Henry Edward Crampton

... idea of transmutation of parts, as well as of mere homology, was in mind is evidenced by a very remarkable sentence in which Aristotle asserts, "Empedocles says that fingernails rise from sinew from hardening." Nor is this quite all, for surely we find the germ of the Lamarckian conception of evolution through the transmission of acquired characters in the assertion that "many characteristics appear in animals because it happened to be thus in their birth, as that they have such a spine because they happen to be descended from one that ...

— A History of Science, Volume 1(of 5) • Henry Smith Williams

... have here to deal only with the theory of selection, I need not discuss the Lamarckian hypothesis, but I must express my opinion that there is room for much doubt as to the cooeperation of this principle in evolution. Not only is it difficult to imagine how the transmission of functional modifications could take place, ...

— Evolution in Modern Thought • Ernst Haeckel