Definition of Lamarck, Jean Baptiste de in English:

Lamarck, Jean Baptiste de

Line breaks: Jean Bap|tiste de La|marck
Pronunciation: /laˈmɑːk
 
, lamaʀk/
( 1744–1829), French naturalist. He was an early proponent of organic evolution, although his theory is not widely accepted today. He suggested that species could have evolved from each other by small changes in their structure, and that the mechanism of such change (not now generally considered possible) was that characteristics acquired in order to survive could be passed on to offspring.

Derivatives

Lamarckian

noun& adjective
More example sentences
  • Nevertheless, he later downplayed the significance of Mendelism and held to Lamarckian ideas throughout his life.
  • You are a Lamarckian who believes that acquired characteristics can be inherited, and ignores the enormous evidence against this idea.
  • The new Lamarckians accept natural selection, with reservations.

Lamarckism

noun
More example sentences
  • In the Soviet Union the belief in inheritance of acquired characteristics, Lamarckism, was applied over decades by Lysenko, to plants.
  • It was due to Lysenko's efforts that many real scientists, those who were geneticists or who rejected Lamarckism in favor of natural selection, were sent to the gulags or simply disappeared from the USSR.
  • Chapter 3 ends this section with an examination of the evolutionary perspective of analysis, including descriptions of Darwinism, Lamarckism, and Weismannism.

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