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Bio lecture 3 - BIO 311D LECTURE 3 Click to edit Master...

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Click to edit Master subtitle style BIO 311D LECTURE 3 Processes of evolution and adaptation
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Evolution Descent with modification Darwin’s mechanism –
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Process of evolution – 4 steps 1. There is genetically-based variation in the population, due initially to random mutation. 1. In a given environment, individuals with certain genetic-based traits have greater reproductive success than other individuals. 1. Those individuals pass more copies of their alleles into the next generation. 1. As a result, there is a change in allele frequency over time.
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Linnaeus (classification) Hutton (gradual geologic change) Lamarck (species can change) Malthus (population limits) Cuvier (fossils, extinction) Lyell (modern geology) Darwin (evolution, nutural selection) Mendel (inheritance) Wallace (evolution, natural selection) 1750 American Revolution French Revolution U.S. Civil War 1800 1850 1900 1795 Hutton proposes his theory of gradualism. 1798 Malthus publishes “Essay on the Principle of Population.” 1809 Lamarck publishes his theory of evolution.
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