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Organic evolution
- Jean-Baptiste Lamarck was a biological visionary, the first biologist to articulate a comprehensive theory of organic evolution that claimed that all the different forms of life on earth had been successively developed from the simplest to the most complex.
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Lamarck made his most important contributions to science as a botanical and zoological systematist, as a founder of invertebrate paleontology, and as an evolutionary theorist. In his own day, his theory of evolution was generally rejected as implausible, unsubstantiated, or heretical.
Lamarck started his scientific career as a botanist, but in 1793 he became one of the founding professors of the Musee National d’Histoire Naturelle as an expert on invertebrates. His work on classifying worms, spiders, molluscs, and other boneless creatures was far ahead of his time.
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
Nov 21, 2023 · What was Jean-Baptiste Lamarck contribution to biology? Lamarck's contribution to biology included developing a classification system for invertebrates and for coining the...
- Lamarck is best known for a theory of evolution known as Lamarckism or Lamarckian evolution. Lamarckian evolution is based on Lamarck's idea that u...
- Changes in the traits of an an organism can occur over time through use and disuse. These traits can be transferred to offspring.
- Lamarck's contribution to biology included developing a classification system for invertebrates and for coining the term invertebrate. He also prop...
But Lamarck took on the enormous challenge of learning -- and creating -- a new field of biology. The sheer number and diversity of invertebrates proved to be both a challenge and a rich source of knowledge.
Lamarck embraced invertebrate zoology for much of the remainder of his career and ultimately wrote an important set of volumes on invertebrates between 1815 and 1822, which also contain his final views on evolution. For the last several years of his life, Lamarck was blind and impoverished.
While he was working on Hydrogéologie (1802), Lamarck had the idea to apply the principle of erosion to biology. This led him to the basic principle of evolution, which saw the fluids in organs inheriting more complex forms and functions, thus passing on these traits to the organism's descendants. [12]
