1. PHYLOGENETIC TREES

2. Phylogenetic Tree Example: An Oak Tree has roots and branches.
Phylogenetic tree has a
common ancestor (roots)
branches for more recent organisms.
Phylogenetic tree is a visual way of organizing life and understanding relationships

3. Trees are used to:

4. 1. To link classification and evolution

5. 2. Show divergence

6. 3. Estimate time of divergence

7. 4. Identify new traits

8. 5. Illustrate common traits

9. Illustrate common traits

10. Constructing a Phylogenetic Tree
1. Determine common trait ancestral trait
2. Determine organism that has no other shared trait….branch by itself…outgroup
3. Determine a trait that the rest of organisms have but not the original one
4. Continue separating remaining groups

11. Now – Practice!