Mutations that result in resistance to specific antibiotics in bacterial organisms occur
A)only when the bacteria are exposed to the drug to which they become resistant.
B)more often when the bacteria are exposed to the drug.
C)at any time,even when the bacteria are not exposed to the drug.
D)only when the bacteria are exposed to radiation or other mutagens.

Question

Quizplus · Accepted Answer

Mutations occur randomly and can happen at any time, regardless of whether the bacteria are exposed to antibiotics. These random mutations may confer resistance, which is then selected for when the bacteria are exposed to the drug.

Mutations That Result in Resistance to Specific Antibiotics in Bacterial