A bacterium is found that is resistant to the antibiotic gentamicin.The bacterium was isolated in a hospital where patients were routinely given gentamicin for a variety of infections.What was the pressure that selected for this resistant population?
A)presence of gentamicin in the environment
B)high mutation rate for the bacterium
C)growth situation for the bacterium
D)patients that did not receive the antibiotic

Question

Quizplus · Accepted Answer

The presence of gentamicin in the environment (hospital setting) acted as a selective pressure, favoring the survival and reproduction of bacteria that had or acquired resistance to this antibiotic.

A Bacterium Is Found That Is Resistant to the Antibiotic