1. Welcome to Class Define the patterns of evolution.

2. Agenda Phylogenetic tree notes Why Evolution matters video Review

3. Phylogenetic Tree

4. What is a Phylogenetic Tree? A branching diagram showing evolutionary relationships among species based on similarities and differences in physical and/or genetic characteristics

6. Uses of Phylogenetic Trees Organize knowledge of biological diversity, Structure classifications, Providing insight into events that occurred during evolution. Trees show descent from a common ancestor

7. This tree shows that gibbons diverged before other primate groups. Chimps and humans diverged last.

8. Species Number of differences from human cytochrome c Monkey1 Rabbit4 Horse6 Chicken7 Frog8 Turtle8 Tuna13 Shark14

9. Why does evolution matter now?