Young, AG and M Pickup. 2010. Low S-allele numbers limit mate availability, reduce seed set and skew fitness in snall populations of a self-incompatible plant. Journal of applied ecology 47:541-548
1. What are SI loci? Why are they under negative frequency dependent selection?
2. When SI diversity is low, why do you expect: 1) reduced seed set, and 2) increased variance in seed set?
3. Explain the meaning of the findings in each of the four panels of figures 1 and 2. If I ask this question as a QQQ, I will project the figures on the screen.
4. You might expect that small populations would attract fewer pollinators because they are less apparent. Is this true in this study system? Support your answer with evidence from this paper.
5. What are the advantages and disadvantages of having a stringent system to avoid inbreeding (as in this week’s paper) as opposed to more general inbreeding avoidance that can break down under certain circumstances (such as in the wolf paper last week)? Are you surprised to find these systems in plants versus animals? Why or why not?
6. Why is this study novel?