The theory that structural variations, characteristic of species and genera, are produced in animals and plants by the direct influence of physical environments, and esp., in the case of animals, by effort, or by use or disuse of certain organs. It is a discredited theory, not believed by modern biologists.
An evolutionary theory (proved false by Darwin) stating that species change over time by the use and disuse of structures and the inheritance of acquired traits.
A theory of evolution whereby change occurs based on the use or disuse of a particular feature. This is mostly just historical although more recently variants of this are making a comeback.
a theory of organic evolution claiming that acquired characteristics are transmitted to offspring
A method of heredity that does not apply to genetics but is applicable to social ADAPTATION. Lamarckism posits that acquired traits can be passed from parent to offspring.
The theory that acquired characteristics can be inherited and that any new genetic variation tends to be adaptively directed rather than ‘random’ as stated by Darwin.
The view, articulated by Jean-Baptiste, Chevalier de Lamarck, that features acquired during an organism's lifetime would be passed on to succeeding generations, leading to inheritable change in species over time.
Lamarckism or Lamarckian evolution is a theory put forward by the French biologist Jean-Baptiste Pierre Antoine de Monet, Chevalier de Lamarck, based on heritability of acquired characteristics, the once widely accepted idea that an organism can pass on characteristics that it acquired during its lifetime to its offspring.