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Adventures of Charles Darwin
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Classification of living organisms based on physical similarities.
Carolus Linnaeus Classification of living organisms based on physical similarities.
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Jean-Baptiste Lamarck
“Inheritance of Acquired Characteristics”
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Catastrophism-catastrophic events cause species extinction
Georges Cuvier Catastrophism-catastrophic events cause species extinction
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James Hutton “Father of Modern Geology”
Gradualism: Earth’s features were created by means natural causes over geological time.
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Charles Lyell Uniformitarianism- Changes which occur on Earth occur at a constant rate over long periods of time (Principals of Geology).
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Voyages on the HMS Beagle (12/27/1831 to 10/02/1836)
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Variation: members within a population differ.
Interspecific- different species Intraspecific- same species
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Adaptation: physical or behavioral feature that allows an organism to better survive in its environment.
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Darwin’s Theory of Natural selection
Tenant one: Over reproduction results in competition and a struggle for existence.
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Darwin’s Theory of Natural selection
Tenant 2: In any population, there is variation and an unequal ability of individuals to survive and reproduce.
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Darwin’s Theory of Natural selection
Tenant 3: “Best-fit” individuals are more likely to survive and pass down their traits to offspring.
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Darwin’s Theory of Natural selection
Tenant 4: Over time, variations accumulate and the population changes (descent with modification).
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Evolution by Natural Selection
Darwin’s book, On the Origin of Species by Means of Natural Selection was published in 1858; 22 years after his voyage on the Beagle.
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