This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
[{'content': 'In staphylococci, plasmids, encoding beta-lactamase are transmitted by: \nSelect and explain. \nA. Conjugation, B. Transduction, C. Transposon, D. Transformation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Transduction: It is the transfer of gene carrying resistance through the agency of a bacteriophage. The R foctor is taken up by the phage and delivered to another bacterium which it infects. Many Staph. aureus strains have acquired resistance by transduction. Ceain instances of :&;enicillin, erythromycin and chloramphenicol resistance have been found to be phage mediated Beta-lactamases are produced by staphylococci, Haemophilus, gonococci, etc. which inactivate penicillin G. The', 'role': 'assistant'}]