Jean Baptiste Lamarck's Theory Of Natural Selection

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Jean Baptiste Lamarck born on August 1, 1744, was a naturalist that considered himself a natural philosopher and a physicist that looked down on the synthesis that was the Enlightenment. He started out as an essentialist where he had believed species were unchanging, but after work on the Paris Basin on Molluscs, he found that transmutation in the nature of organisms occurred over time. Lamarck was then convinced in that changes in the environment had impacts on organisms that would change their needs to live in that environment and changes to their behavior. With altered behavior, organisms would be less dependent or more dependent on certain organs or structures which would increase in size or shrink over generations of time, Lamarck referred to this as his First Law. The Second Law believed that all changes are heritable and all organisms are continuously changing and adapting with their environment. These concepts are the main points for Lamarckian evolutionism. Lamarck was one of the first to create and develop an evolutionary theory, while also publishing three works. His ideas of evolution are vastly different than that of Charles Darwin, but their ideas and works both conclude on the same result of that changes in lineages and inheritance change over long periods of time influenced by environmental changes. …show more content…
Born on February 12, 1809, Charles Darwin was an avid collector of beetles and learned about natural science under the guidance of John Stevens Henslow who was able to get Darwin passage on the HMS Beagle. Darwin's journey on the beagle led him to witness earth's natural forces and his study of zoology and geology. His findings and specimens led him to speculate and then sought out to explain on changes in living life forms over
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