How does resistance to drugs spread in bacterial populations?
A) Exposure to drugs alters gene expression in bacteria.
B) Horizontal gene transfer between bacteria spreads R (resistance) plasmids.
C) Both horizontal gene transfer and the growth of biofilms spread drug resistance.
D) The formation of biofilms protects bacteria from the effects of drugs.
E) Exposure to drugs causes mutations in bacterial genes.
Correct Answer:
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