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- Unlike Darwin, Lamarck believed that living things evolved in a continuously upward direction, from dead matter, through simple to more complex forms, toward human "perfection." Species didn't die out in extinctions, Lamarck claimed. Instead, they changed into other species.
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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.
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Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise
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.
Though he was building on the work of his mentor, Count George-Louis Leclerc de Buffon, Jean-Baptiste Lamarck (1744-1829) is often credited with making the first large advance toward modern evolutionary theory because he was the first to propose a mechanism by which the gradual change of species might take place.
Lamarck's contribution to evolutionary theory consisted of the first truly cohesive theory of biological evolution, [9] in which an alchemical complexifying force drove organisms up a ladder of complexity, and a second environmental force adapted them to local environments through use and disuse of characteristics, differentiating them from othe...
Apr 12, 2021 · The important questions for Lamarck and for evolutionary biology are to discover how the transition from the non-living to the living occurred, and how the moral, rational, conscious, and sensitive soul of the human being arose from animal life (Ginsberg and Jablonka, 2019). Lamarck’s work was an evolutionary attempt to explain unresolved ...
