BIOL 1202 : Biol1202Exam 1Notes
Document Summary
Descent with modification: a darwinian view of life (ch. Evolution: two main ideas: change over time of the genetic composition of a population, descent of modern organisms with modification from preexisting organisms. Evolutionary adaptation: accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Concept 22. 1: the darwinian revolution challenged traditional views of a young earth inhabited by unchanging species. Use and disuse: bodies of living organisms are modified through the use or disuse of parts. Inheritance of acquired characteristics: these modifications are inherited by offspring. Darwin - on the voyage of the beagle. Wallace - while he was a naturalist in indonesia. Concept 22. 2: descent with modification by natural selection explains the adaptations of organisms and the unity and diversity of life. Natural selection: unequal survival and reproduction of organism due to environmental forces, resulting in preservation of favorable adaptations. Process "selects" from what is available in the gene pool.
