The rise of methicillin-resistant Staphylococcus aureus (MRSA)can be considered to be an example of artificial selection because
A)humans purposefully culture MRSA in large fermenters in an attempt to make the bacteria ever-more resistant.
B)soil is cultivated with S.aureus to replenish the nutrients.
C)humans synthesize methicillin and create environments in which bacteria frequently come into contact with methicillin.
D)humans are becoming resistant to bacteria by taking methicillin.

Question

Quizplus · Accepted Answer

Methicillin-resistant Staphylococcus aureus (MRSA) has evolved resistance to the antibiotic methicillin, which is synthesized by humans, and is frequently used in healthcare environments. The widespread use of methicillin has created an environment in which MRSA can thrive due to the selective pressure exerted by the antibiotic. This can be considered an example of artificial selection because humans have inadvertently selected for the survival of MRSA strains that are resistant to methicillin.

The Rise of Methicillin-Resistant Staphylococcus Aureus (MRSA)can Be Considered to Be