BIOL 1202 Study Guide - Midterm Guide: Natural Selection, Monera, Sympatric Speciation

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22 Jul 2014
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Chapter 22: descent with modification: a darwinian view of life. Pre-darwinian theory of evolution: lamarck, use and disuse. Bodies of living organisms are modified through the use or disuse of parts: inheritance of acquired characteristics. Evolution in a historical context: figure 22. 2. Evolution by natural selection: darwin and wallace developed the theory independently, darwin-voyage of the beagle, wallace-british naturalist in indonesia. Natural selection: the unequal survival and reproduction of organisms due to environmental forces, resulting in the preservation of favorable adaptations, process selects from what is available in the gene pool, new characteristics are not created on demand. Artificial selection: selective breeding of organisms to encourage the occurrence of desirable traits, provides evidence for natural selection, figure 22. 9. Trees versus scale naturae aristotles scala naturae: ladder of nature pg. 453: evolution not about climbing ladder of nature from lower to higher, evolution is a bush with lineages branching from one another.

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