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Comparison of the evolution theories of Charles Darwin and Jean-Baptiste Lamarck In this essay I am going to compare the theories of Charles Darwin and Jean-Baptiste Lamarck Charles Darwin was a British Scientist who lived between 1809-1882 He laid down the foundation of modern evolutionary theory with his concept of the development of life through the slow working process of natural selection Darwin started to make notes about this theory in 1836 and in 1838 he had arrived at a sketch of a theory of evolution through natural selection It was not until 1858 that his theory was first published in a paper Darwins theory is that as plants or animals spread to new areas or as the conditions change different variations would be favoured in different places This would mean these variations would spread through the populations of the plants or animals Over time this would finally lead to a development of new species This theory was explained in the book The Origin of Species which describes his studies on the Galapagos Islands in the Pacific Ocean He noticed that the species on the islands varied slightly from each island and were adapted to local conditions The reaction to this theory was immediate Biologists argued that Darwin could not prove his hypothesis Other criticised his ideas of variation and how he could not prove how these variations came about or how they were passed on This part of his theory was not answered until the birth of modern genetics in the early 20th century In fact many scientists had doubts about this theory for 50-80 years The most publicised attacks came from religious opponents who believed it was impossible for humans to be on the same level as animals Jean-Baptiste Lamarck was a Frenchman who lived between 1744 and 1829 He claimed that changes in a species are brought about by environmental pressures-such as changes in the food or
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