chapter 26 notes
Chapter 26 Rooted Tree- has an ancestor common to all organisms on the tree Kingdom, phylum, class, order, family, genus, species Node- spot where a common ancestor exists of branches coming off of it Phylocode method of classification- naming based on similarities Homoplasy- a trait (genetic, morphological etc.) that is shared by two or more taxa because of convergent evolution i.e. 4 chambered heart in mammals and birds Clade- a group consisting of an ancestor and all its descendants, a single "branch" Cladistics- grouped together based on whether or not they have one or more shared unique characteristics that come from the group's last common ancestor and are not present in more distant ancestors