Lamarckism
Videos
Lamarckism, also known as Lamarckian inheritance or neo-Lamarckism, is the notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use o
Jean-Baptiste Lamarck repeated the ancient folk wisdom of the inheritance of acquired characteristics.
The long neck of the giraffe is often used as an example in popular explanations of Lamarckism. However, this was only a small part of his theory of evolution towards "perfection"; it was a hypothetical illustration; and he used it to discuss his theory of heredity, not evolution.
Edward Drinker Cope
Charles-Édouard Brown-Séquard tried to demonstrate Lamarckism by mutilating guinea pigs.
Neo-Darwinism
Videos
Neo-Darwinism is generally used to describe any integration of Charles Darwin's theory of evolution by natural selection with Gregor Mendel's theory of genetics. It mostly refers to evolutionary theor
Friedrich Leopold August Weismann, considered the "founder of Neo-Darwinism" for expanding Darwin's theory along genetic lines
George John Romanes originally used Neo-Darwinism in 1895 to refer to an early modification of Darwin's theory. Photograph by Elliott & Fry (1896)