3 - o Lamarck Inheritance of acquired characteristics Trend towards ideal form o Darwin Biological changes happen slowly All life forms are related

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Origins of Evolution Age of Enlightenment (18 th century) o How did humans come to be? o Primary explanation: Religious, God created life At 9am on a Sunday, Oct. 23, 4004 BC Animals are fixed 1831, Darwin set sail on HMS Beagle The 19 th Century Fossil evidence: o Rock layers and soil state o Lower layer = older o Why are some species extinct? Theories: o Catastophism: Massive event wiped out life on Earth o Uniformitarianism: Explanations for past events can be found in long-term actions of ordinary events that still occur today New theories of species change:
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Unformatted text preview: o Lamarck: Inheritance of acquired characteristics Trend towards ideal form o Darwin: Biological changes happen slowly All life forms are related More species now than before Adaptation: • Population expansion infinite, but environment finite • Variation transmitted from parents to offspring and affects population’s ability to reproduce Darwin’s main contribution was the idea of natural selection: • Selection acts on individuals...
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This note was uploaded on 06/12/2011 for the course ANTH 101 taught by Professor Scarre during the Spring '07 term at UNC.

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3 - o Lamarck Inheritance of acquired characteristics Trend towards ideal form o Darwin Biological changes happen slowly All life forms are related

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