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Lamarckism
Sign in to saveAlso known as use and disuse theory, Lamarckian inheritance, Lamarckian evolution, inheritance of acquired characteristics
thumb|upright=1.8|Jean-Baptiste Lamarck|Lamarck argued, as part of his theory of [[heredity, that a blacksmith's sons inherit the strong muscles the blacksmith acquires from his work.]] 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 or disuse during its lifetime. It is also called the inheritance of acquired characteristics or more recently soft inheritance. The idea is named after the French zoologist Jean-Baptiste Lamarck (1744–1829), who inc
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24 sectionsContents
- Early history
- Origins
- Darwin's pangenesis
- Lamarck's evolutionary framework
- Lamarck's discussion of heredity
- Weismann's experiment
- Textbook Lamarckism
- Neo-Lamarckism
- Context
- 19th century
- Early 20th century
- Late 20th century
- Ideological neo-Lamarckism
- Critique
- Mechanisms resembling Lamarckism
- Transgenerational epigenetic inheritance
- Somatic hypermutation and reverse transcription to germline
- Hologenome theory of evolution
- Baldwin effect
- In sociocultural evolution
- References
- Bibliography
- Further reading
- External links
thumb|upright=1.8|Jean-Baptiste Lamarck|Lamarck argued, as part of his theory of [[heredity, that a blacksmith's sons inherit the strong muscles the blacksmith acquires from his work.]] 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 or disuse during its lifetime. It is also called the inheritance of acquired characteristics or more recently soft inheritance. The idea is named after the French zoologist Jean-Baptiste Lamarck (1744–1829), who incorporated the classical era theory of soft inheritance into his theory of evolution as a supplement to his concept of orthogenesis, a drive towards complexity.
Introductory textbooks contrast Lamarckism with Charles Darwin's theory of evolution by natural selection. However, Darwin's book On the Origin of Species gave credence to the idea of heritable effects of use and disuse, as Lamarck had done, and his own concept of pangenesis similarly implied soft inheritance.