Use these Biology and Evolution videos entitled Natural Selection, Sources of Variety and Speciation to study the significant role played by natural selection in the evolution of species, and examine five patterns in which the mechanism of natural selection acts: stabilizing selection, directional selection, balancing selection, disruptive selection, and kin selection.
Learn about the theory of natural selection, gene mutation, gene flow, and genetic shift. Use these 6 online educational video titles to explore the concepts of population, gene pools, and fitness. Examine natural selection as a mechanism for changing gene frequencies. Study mutation, recombination, and changes in chromosome structure and number as the sources of genetic variability in evolution. Learn about gene flow, genetic shift, and the process of geographic race formation.