Question

explain lamarkism with examples

Answer 1

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Answer 2

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Lamarckism (or Lamarckian inheritance) is the hypothesis that anorganism can pass on characteristics that it has acquired during its lifetime to its offspring. It is also known as theinheritance of acquired characteristicsor soft inheritance. It is inaccurately[1][2]named after the French biologist Jean-Baptiste Lamarck (1744–1829), who incorporated the action of soft inheritance into his evolutionary theories as a supplement to his concept of orthogenesis, a drive towardscomplexity. The theory is cited in textbooks to contrast with Darwinism. This paints a false picture of the history of biology, as Lamarck did not originate the idea of soft inheritance, which was known from the classical era onwards. It was not the primary focus of Lamarck's theory of evolution; further, in On the Origin of Species (1859),Charles Darwin supported the idea of "use and disuse inheritance", though rejecting other aspects of Lamarck's theory.

Many researchers from the 1860s onwards attempted to find evidence for the theory, but these have all been explained away either by other mechanisms such as genetic contamination, or as fraud. Later,Mendelian genetics supplanted the notion of inheritance of acquired traits, eventually leading to the development of the modern synthesis, and the general abandonment of the Lamarckism inbiology. 

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