Antibiotic Stress and Bacterial Mutation
Bacteria exposed to sublethal doses of antibiotics often exhibit higher mutation rates compared to unexposed bacteria. Which of the following best explains this observation?
A
Direct mutagenic effect of antibiotics on bacterial DNA
B
Horizontal transfer of mutated genes between bacteria
C
Selection for pre-existing hypermutator strains
D
Stress-induced activation of error-prone DNA polymerases
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