You are studying a plant whose seeds persist in the soil for a long time, normally only germinating when the seeds are brought to the surface in full sun by a disturbance such as a tree fall. However, in one of your experimental lineages you find that many seeds germinate when the surface is in full sun even if the seeds are buried too deep to grow to the surface before exhausting their reserves. You suspect that this lineage has a mutation that inhibits:

Question

Quizplus · Accepted Answer

The correct answer involves a mutation that inhibits the conversion of a specific state (P_fr) to another (P_r) in the dark. This suggests that the mutation affects the plant's ability to revert to a state that prevents germination in the absence of light, causing seeds to germinate even when buried too deep for sunlight to reach them.

You Are Studying a Plant Whose Seeds Persist in the Soil