Antibiotic resistance evolves in bacteria when ________.
A)the presence of antibiotics favors bacteria that already have genes for resistance
B)farmers do not use enough antibiotics in animal feed
C)the antibiotics create resistance genes in bacteria
D)none of the above

Question

Quizplus · Accepted Answer

Antibiotic resistance evolves when the presence of antibiotics favors bacteria that already have genes for resistance. These bacteria survive and reproduce, passing on the resistance genes to their offspring. Over time, the use of antibiotics creates a selection pressure that results in the evolution of antibiotic-resistant strains of bacteria. The other options presented (B and C) do not accurately represent how antibiotic resistance evolves in bacteria.

Antibiotic Resistance Evolves in Bacteria When ________