BIOL 1001 : BIOLOGY STUDY GUIDE TEST ONE
Document Summary
Evolution: 2 main ideas: change over time of genetic composition of a population, decent of modern organisms with modification from pre existing organisms. Accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Darwin & wallace developed the theory independently: darwin- voyage of the beagle after graduating college, alfred russell wallace- naturalist in indonesia (studied birds, caught malaria, and wrote paper on ideas similar to darwin) Natural selection: the unequal survival & 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. Mechanism behind natural selection (figure from page 458: ex. Think about the 100m dash track and field competition. Artificial selection: selective breeding of organisms to encourage the occurrence of desirable traits, analogous to natural selection figure 22. 9.
