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  1. 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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  2. 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; MicroevolutionEvolution within a population; Speciation – How new species arise

  3. Aug 13, 2004 · As we see from the grid, a contrast on both scores is found in the evolutionary philosophy of Jean-Baptiste Lamarck. Lamarck’s is a materialistic argument against the variation in nature being a matter of chance. On the Lamarckian view, variations arise in an organism as a direct response to environmental stress or demand, giving rise to a ...

  4. May 17, 2005 · Scientific theories of species change in the nineteenth century, associated traditionally with the names of Jean-Baptiste Lamarck (1744–1829), Charles Darwin (1812–1882), and to a lesser degree, Alfred Russel Wallace (1823–1913), were the product of a complex historical development of theories about the nature of organic life, the ...

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  6. Jun 17, 2019 · 1. Species Permanence and Change in Antiquity. 1.1 Classical Discussions. 1.2 Medieval Revisions. 2. Early Modern Foundations. 2.1 Cartesian History of Nature. 2.2 Mechanism, Pre-existence Theory and Species Fixity. 2.3 Newtonian Revisions. 2.4 Revitalizing Nature. 3. Buffon’s Transformation of Enlightenment Natural History.

  7. The French naturalist Jean-Baptiste de Monet de Lamarck (1744–1829) suggested an evolutionary theory in 1802, which was later called transformism. In this theory, he claimed that species changed and produced series. Transformations appeared when the environment and the habits acted on organisms for a long time.

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