This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Transfer of drug resistance is staphylococcus is by 
Select and explain. 
A. Transduction, B. Transformation, C. Conjugation, D. Transfection
A: Transduction
Answer: A: Transduction 
Explanation: Beta-lactamase-mediated: this is mediated through the production of beta-lactamase or penicillinase, which inactivates penicillin by splitting the beta-lactam ring. these are inducible enzymes which are plasmid-mediated.they can be transmitted by transduction or conjugation. Ref: Textbook of Microbiology; Ananthanarayanan and Panicker; Tenth Edition; Page No: 202