BIOL 1104 Lecture Notes - Lecture 3: Ingroups And Outgroups, Dont

• School: Carleton University
• Department: Biology
• Course: BIOL 1104
• Professor: Gregory Bulte

Document Summary

Think of trees as a sequence of divergence events occurring from root (older) to tips (more recently). A common ancestor shared by the taxa that are both connected to it and up the tree from it. A divergence event in which one taxon split into two taxa. The degree of relatedness between two taxa is established based on either. The number of shared common ancestors between them. Don"t confuse this with the number of nodes. The distance between two tips does say anything about the degree of relatedness between these taxa. The order of the tips are meaningless. ***worksheet: build a tree for the five following taxa a,b,c,d,and e knowing: A,b,c and d are more closely related to one anothwe, than any of them to e. C is more closely related to d than to b or a. B is more closely related to c and d than to a.