BIOL 1202 Chapter : Biology 1202
Document Summary
Evolution: change over time of the genetic composition of a population, decent of modern organisms with modification from preexisting organisms. Evolutionary adaptation: accumulation of inherited characteristics that enhance organisms" ability to survive in specific environments. Pre darwin theory of evolution: lamarck, use and disuse, bodies of living organisms are modified through the use or. Inheritance of acquired characteristics disuse of parts: these modifications are inherited by offspring, these ideas turned out to be wrong. Evolution by natural selection: darwin and wallace developed the theory independently, darwin: voyage of the beagle, wallace: 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. Mechanism behind natural selection: variability, heritability, differential reproductive success.
