The cascade of events determining whether bacteriophage lambda elects to purpose lysogeny or a lytic cycle begins with a race between the production of the lambda repressor and _________.

Question

Quizplus · Accepted Answer

The lambda repressor and the Cro protein both regulate the decision between lysogeny and the lytic cycle. The lambda repressor promotes lysogeny, while Cro promotes the lytic cycle. The production of these two proteins occurs in a race, where the first to reach a critical concentration determines the outcome. Therefore, the correct answer is D, Cro protein.

The Cascade of Events Determining Whether Bacteriophage Lambda Elects to Purpose