BIOL 117 Lecture Notes - Lecture 23: Genetic Correlation, Pleiotropy
Document Summary
Homologies interact: ex. structural re ect developmental and genetic homologies underlying, ultimate homology = genetic code. All have same amino acid coding sequences, etc. (codons: homology experiments. Expressing the genes from one species and expressing it within another: evidence for evolution. Contemporary anatomical similarities: current examples of change over time: Arti cial selection in breeding of animals: darwin"s four postulates. 1. individuals in a population vary in their traits. 2. some of these differences are heritable. 3. in each generation, many more offspring are produced than can survive: only some will live long enough to reproduce, some will produce more offspring than others. 4. individuals with advantageous traits survive and pass on these genes to their offspring: common misconceptions about evolution. Selection occurs during the process, individuals themselves do not change, only the population does: if a population o mice varies in color, the results of selection for camou age ex in mice.
