01:119:115 Lecture 19: Biology- Lecture 19 (Darwinian Evolution - Chapter 1.2, 22.1 - 22.3)
13 Jul 2016
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Pre-darwinian ideas: the intellectual context of darwin"s idea. Darwinian revolution challenged traditional views (earth inhabited by unchanging species) Darwin noted that current species are descendants of ancestral species. Evolution can be defined by darwin"s phrase descent with modification. His theory based on previous ideas and research: next: scala naturae and classification of species. Greek philosopher species unchanging = fixed scala naturae (scale of (figure 22. ) Old testament creation not evolution. Natural theology study god"s plan by studying nature. + binomial format for naming species (example: homo sapiens) Evidence that the creator designed species for a purpose. These were prevailing view at beginning of 19th century. Tuesday, november 4, 2014: new ideas about change over time: cuvier, hutton, and lyell, d. georges cuvier (1769-1832): french paleontologist + natural theologian (figure 22. 2) Rock layers species disappeared + new ones appeared. Each time: god recreated life example: noah"s flood. Late 18th early 19th century view of geology was challenged.
