BIOL 1202 Lecture Notes - Lecture 1: Kingfisher, Lamivudine, Selective Breeding
Document Summary
22: descent with modification- a darwinian view of life. Evolution: 2 main ideas change over time of the genetic composition of a population descent of modern organisms with modification from pre-existing organisms. Evolutionary adaptation accumulation of inherited characteristics that enhance organisms ability to survive in specific environments. Lamarck: use and disuse: bodies of living organisms are modified through the use or disuse of parts. Inheritance of acquired characteristics (modifications inherited by offspring) Observed: individuals in a population vary in their heritable characteristics and that organisms produce more offspring than the environment can support (variability and competition) Inferred: individuals that are well suited to their environment tend to leave more offspring than others and that over time favorable traits accumulate in the population. Artificial selection (fig 22. 9: selective breeding of organisms to encourage the occurrence of desirable traits, analogous to natural selection, humans have been doing this for a long time, common.
