If an organism is treated with a chemical agent that doubles the rate of mutation observed in its absence, and a mutation occurs, what is the probability that it was caused by the chemical agent?

Question

Quizplus · Accepted Answer

Since the chemical agent doubles the rate of mutation, we can assume that half of the mutations observed are caused by the chemical agent and half of them would have occurred anyway. Therefore, the probability that the mutation was caused by the chemical agent is 1/2 or 50%.

If an Organism Is Treated with a Chemical Agent That