Question

Penicillin is an antibiotic that was discovered in 1928. Today, many species of bacteria have acquired resistance to penicillin. This adaptation occurred as the result of
A) mutualism. B) symbiosis. C) genetic mutation. D) divergent evolution.

Answer 1

Answer:

genetic mutation

this is your answer

Answer 2

Answer:

Most strains of Streptococcus pneumoniae are highly susceptible to both penicillins and cephalosporins but can acquire DNA from other bacteria, which changes the enzyme so that they develop a low affinity for penicillins and hence become resistant to inhibition by penicillins.