1. Evolution of Cooperation How do you direct more benefit to cooperators vs. cheaters? How would you ever get a mutualism if both are costly?

2. Important reducer of greenhouse gas emissions (90% of marine methane from marine sediments oxidized by AMO) Unable to culture in lab – could be obligate syntrophy Unclear which intermediates are exchanged Anaerobic methane oxidation (AOM) Sulfate Reducing Bacteria Methanotrophic Archaea methane is oxidized with sulfate as the terminal electron acceptor: CH 4 + SO 4 2- → HCO 3 - + HS - + H 2 O

3. Structured populations and Haystack model (John Maynard Smith)

4. Chuang et al, Science 2009 Simpson’s Paradox

5. Prisoner’s Dilemma (Turner & Chao, 1999. Nature) W(defector)

6. “Snowdrift Game”

7. Cooperation in Myxococcus (Kuner & Kaiser, 1982)

8. (Fiegna & Velicer, 2003; Velicer & Yu, 2003)

9. (Fiegna et al., 2006. Nature)

10. Monday (11/21): Class Presentations! Monday (11/28): Evolution of Pathogens