What Did Lamarck Do?
Jean Baptiste Lamarck (1744-1829) Is One of the Best-Known Early Evolutionists. .. . According to Lamarck, Organisms Altered Their Behavior in Response to...
Jean Baptiste Lamarck (1744-1829) is one of the best-known early evolutionists. ... According to Lamarck, organisms altered their behavior in response to environmental change. Their changed behavior, in turn, modified their organs, and their offspring inherited those "improved" structures.
What was Lamarck's theory of evolution?
Lamarckism, a theory of evolution based on the principle that physical changes in organisms during their lifetime—such as greater development of an organ or a part through increased use—could be transmitted to their offspring.
What were Lamarck's two theories?
Lamarck's two-factor theory involves 1) a complexifying force that drives animal body plans towards higher levels (orthogenesis) creating a ladder of phyla, and 2) an adaptive force that causes animals with a given body plan to adapt to circumstances (use and disuse, inheritance of acquired characteristics), creating a ...
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