2.6 Three schools of classification
This clip explores the three kinds of relationships that have been explained so far, in terms of the work of Simpson, Mayr and Hennig, which are referred to as Simpsonian, Mayrian and Hennigian relationships.
Dr. Patterson links each of the systematists with a particular school of classification – phenetics, cladistics and evolutionary systematics, or eclectics, and establishes which one of these most directly matches the ideas of molecular systematists.
This clip refers to Figures 4, 5 and 6. You may want to review these diagrams before listening to the clip.