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Who is Jean-Baptiste Lamarck?
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The doctrine, proposed by the French naturalist Jean-Baptiste Lamarck in 1809, influenced evolutionary thought through most of the 19th century. Lamarckism was discredited by most geneticists after the 1930s, but certain of its ideas continued to be held in the Soviet Union into the mid-20th century.
- The Editors of Encyclopaedia Britannica
Lamarck also proposed that organisms were driven from simple to increasingly more complex forms. Evolution by natural processes Lamarck was proposing that life took on its current form through natural processes, not through miraculous interventions.
Mar 20, 2024 · Jean-Baptiste Lamarck (born August 1, 1744, Bazentin-le-Petit, Picardy, France—died December 18, 1829, Paris) was a pioneering French biologist who is best known for his idea that acquired characters are inheritable, an idea known as Lamarckism, which is controverted by modern genetics and evolutionary theory.
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 .
His classification of the mollusks was far in advance of anything proposed previously; Lamarck broke with tradition in removing the tunicates and the barnacles from the Mollusca. He also anticipated the work of Schleiden & Schwann in cell theory in stating that:
1Biography. 2Lamarckism. 2.1Lamarck's theory. 2.2Proponents. 3Lamarckism and single-celled organisms. 4Lamarckism and inheritance of acquired cultural and spiritual characteristics. 5Legacy. 6Major Works. 7References. 8Credits. Lamarck was also one of the first to use the term biology in its modern sense, and he coined the term invertebrates .
Although originally a botanist, Lamarck's appointment in 1793 to the Museum d'Histoire Naturelle in Paris resulted in assigned responsibilities for invertebrates and microscopic organisms. In 1800, Lamarck gave a lecture in which he espoused the idea of evolution (published in 1801).
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