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ANTH 1001
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11713Carl von Linn 17071778oBetter known as Carolus LinnaeusoLinneaus was a creationist and an advocate of the Principle of Fixity of Species All species were created by God and species were immutable and unchangeable after their creation Jean Baptiste Lamarck 17441829oTheory of Inheritance of Acquired Characteristicsorganism has needs in order to surviveneeds are met by modification of organs or production of new organscontinued use of an organ leads to an increase in its size and functional capacity whereas disuse leads to its degeneration and losschanges in an organ that occur during ones lifetime are inheritable and can be passed to ones offspring Georges Cuvier 17691832oTheory of CatastrophismIn the past there were a series of sudden violent geological and climatic changes that led to the extinction of animals in the affected region After the cataclysm subsided the region was repopulated by animals from neighboring areas that were similar in appearance but no identical with those that went extinct Charles Lyell 17971875oTheory of UniformitarianismForces existing today that shape the earth are the same as those that acted in the past Thomas Malthus 17661834oEssay on the Principle of Population Charles Darwin 18091882oTheory of Natural Selection to explain transformation of a species over timeoObservations on Galpagos Islands Alfred Russell Wallace 18231913oAlso developed theory that species change by natural selection Charles DarwinoBook On the Origin of Species published in 1859Darwins Theory of Natural Selection1Reproductive potential of a population is great but actual population size remains stable 2Resources in the environment are in limited supply there is competition among individuals for resources 3Biological variation is normal in a population 4Any hereditary variation that allows an organism even a slight advantage in competition for resources will be perpetuated Organisms with the favorable variations will survive and
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