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Quote by Jean-Baptiste Lamarck

“First Law In every animal which has not passed the limit of its development, a more frequent and continuous use of any organ gradually strengthens, develops and enlarges that organ, and gives it a power proportional to the length of time it has been so used; while the permanent disuse of any organ imperceptibly weakens and deteriorates it, and progressively diminishes its functional capacity, until it finally disappears. Second Law All the acquisitions or losses wrought by nature on individuals, through the influence of the environment in which their race has long been placed, and hence through the influence of the predominant use or permanent disuse of any organ; all these are preserved by reproduction to the new individuals which arise, provided that the acquired modifications are common to both sexes, or at least to the individuals which produce the young.”

Quote by Jean-Baptiste Lamarck

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Zoological Philosophy

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Author

Jean-Baptiste Lamarck
Jean-Baptiste Lamarck

Jean-Baptiste Lamarck was a French naturalist and biologist, a key figure in the history of science. Born on August 1, 1744, in Bazentin, Oise, France, and died on December 18, 1829, in Paris, France. He is known for his contributions to the theory of evolution, particularly his theory of inheritance of acquired characteristics, which suggested that an organism could pass on traits acquired during its lifetime to its offspring. Although his theories are now considered outdated, they laid the groundwork for the modern understanding of evolution. more

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