BIOL 112 Chapter 22: Chapter 22 Darwinian View of Life
31 Jul 2016
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Evolution- descent with modi cation and change in genetic composition of population from generation to generation. Pattern of evolution revealed through: chemistry geology and physics. They are compressed and layered-> forming strata (paleontology - the study of fossils) Cuvier though each boundary between each strata described some sort of catastrophic event. Lamarck"s (incorrect) principles: 1) use and disuse- parts of the body were larger than others: inheritance of acquired characteristics -> organism could pass these modi cations to its offspring. On darwins expedition around the world he was able to recognize the similarities species had with one another. Adaptations- inherited characteristics of organisms that enhance their survival and reproduction in speci c environments. Galapagos island: nches with different beaks to eat food with. Natural selection: a process in which individuals that have inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits. Darwin used descent with modi cation instead of evolution.
