BIO 123 Chapter Notes - Chapter 22: Genetic Code, Continental Drift, Biogeography
1 Feb 2017
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Descent with modification a darwinian view of life. Striking ways - organisms suited to environment. Darwin"s book the origin of species - revolution of evolution. Change in the genetic composition of a population from generation generation. Ways to view evolution: pattern or process. Pattern - data/facts observed of natural world. Test theories to apply with new observations: darwinian revolution. Repopulated by different species immigrating from others. Same geo processes occurring in the past at the same rate. Published natural selection hypothesis identical to darwin first. Fossils - remains/ traces of organisms from the past. Sedimentary rock - most common for fossils. Erosion carved younger strata revealing old stata that was buried. Principals by lamarck: use and disuse - body parts become stronger + larger while deteriorate if not, inheritance of acquired characteristics - pass new adaptive qualities to next generation. Believed evolution happened because organisms watered to be more complex. Darwin spent 5 years on hms beagle around the world.
