Questions to consider when reading Ouyang:

1. What is meant by "soft selection"?

2. After seeing the results of figure 1., why do you think the authors continued to determine if the clock was linked to fitness?

3. Why is the experiment in figure 3D important?

Questions for Dodd:

1. Can you think of an experiment to do in a field setting to test whether the clock provides an adaptive advantage in nature?

2. Would you expect to find plants that have a period altered from 24 hours in nature?