SECTION 17.2 CLASSIFICATION BASED ON EVOLUTIONARY RELATIONSHIPS Power Notes CHAPTER 17 The Tree of Life Phylogenies can be shown using diagrams called can be determined using evidence such as are defined as 2. which are constructed by identifying 1. Clade: 3. Copyright by McDougal Littell, a division of Houghton Mifflin Company 4. Species A Species B Species C Species D Derived character: Node: Unit 6 Resource Book McDougal Littell Biology Power Notes 7