The Grand Rapids Variety of Lettuce Produces Seeds That Will

question 22

Essay

The Grand Rapids variety of lettuce produces seeds that will not germinate unless they are exposed to light. Phytochrome is involved in this process in that exposure to red light stimulates germination, while far-red light inhibits germination. However, the effect of red light can be reversed by an immediate exposure to far-red light-and vice versa. You design an experiment in which you expose seeds of Grand Rapids lettuce first to red light, then immediately to far-red light, and then immediately to red light again. Would these seeds germinate? Use your knowledge of the phytochrome molecule to explain your reasoning. What if the seeds were exposed first to red light, then immediately to far-red light, then immediately to red light again, and then immediately to far-red light again?

---

Definitions:

Interest Arbitrator

An impartial third party who resolves disputes between labor unions and employers by making binding decisions.

Grievance Disputes

Conflicts arising from alleged violations of workplace agreements or contracts, often resolved through negotiated procedures.

Strike Rights

The legal rights granted to workers to cease work in order to protest against working conditions, policies, or other labor disputes without fear of retaliation.

Binding Arbitration Clause

A contractual agreement to submit disputes to an impartial third party for a decision that is final and enforceable, often used in labor agreements.