BIOL 1202 Chapter : Chapter 22 Descent With Modification
Document Summary
Chapter 22 descent with modification: a darwinian view of life. Evolution by natural selection: darwin and wallace developed the theory independently, charles darwin- voyage of the beagle, alfred russell 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: flow chart p. 458. Artificial selection: selective breeding of organisms to encourage the occurrence of desirable traits, analogous to natural selection. Concept 22. 3: evolution is supported by an overwhelming amount of scientific evidence. Homologous & analogous structures: homologous, structures or other attributes in different species that resemble each other because of common ancestry, analogous, structures that are similar in function but not in structure and developmental and evolutionary origin.
