The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?
Correct answer: A. Conjugation
- A. Conjugation
- B. Rarefaction
- C. Transduction
- D. Transformation
Explanation
Conjugation transfers resistance plasmids, especially R plasmids, directly between living bacteria and commonly spreads multidrug resistance in vivo. Transformation uses naked DNA, while transduction uses bacteriophages.
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