BIOL 1202 Chapter : Chapter 22 Descent With Modification
Document Summary
Chapter 22- descent with modification: a darwinian view of life. Evolution: 2 main ideas: change over time of the genetic composition of a population, decent of modern organisms with modification from preexisting organisms. Accumulation of inherited characteristics that enhance an organism"s ability to survive in specific environments. Bodies of living organisms are modified through the use or disuse of parts. Darwin and wallace- developed the theory independently, and each without knowledge of genetics. Darwin- voyage of the beagle, spent next 20 years working on his origin of species. Wallace-naturalist in indonesia, sent his papers to darwin. 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. Think about the 100 m dash track and field competition. Selective breeding of organisms to encourage the occurrence of desirable traits. Concept 22. 3 evolution is supported by an overwhelming amount of scientific evidence.
