BIOL 100 Lecture Notes - Lecture 15: Georges Cuvier, James Hutton, Allele Frequency
Document Summary
Explains history and relationships among organismal groups. Modern def: change in allele frequency within a population from one generation to next. Fact: observations of changes of allele frequencies in a population across generations (natural phenomenon) Definition: modern geological and physical process have remained constant over time, changes in nature are gradual (james. Cuvier: catastrophism- brief violent event create change in nature, recognized extinction. Lamarck- proposed testable ideas about how species change. Lyell: earth is very old, since natural process occur slowly, evolution needs time. Darwin: naturalist on hms beagle, ship sailed around the world in 1830s. His observations helped him to formulate his theory of evolution (natural selection) looked towards artificial selection to understand natural selection. Def: heritable traits that benefit survival are selected and become common in population. Genetic variation- within a species, no two individuals are identical, some variation is present. Limited resources- every habitat has limited supplies of the.
