BIOL 1202 : Test 1 Notes
Document Summary
Change over time of genetic composition of a population. Decent of modern organisms with modification from preexisting organisms. Accumulation of inherited characteristics that enhances organism"s 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 are inherited by offsprings, ideas were wrong. Darwin and wallace developed theory independently: darwin- derived the theory during his voyage on the beagle, wallace- a naturalist, derived the theory in indonesia. Unequal survival and reproduction of organisms due to environmental forces resulting in the presence of favorable adaptations. Process selects from what is available in the gene pool. New characteristics are not created on demand. Mechanics behind natural selection: variability, heritability, differential reproductive success, page 458. Selective breeding of organism to encourage the occurrence of desirable traits. Analogous to natural selection: figure 22. 9.
