A) plasmid
B) phage vector
C) F-factor
D) pili
Correct Answer: B
Solution :
Transduction is method of sexual recombination, in which DNA of a bacterial DNA is transferred into another bacterial cell through a bacteriophage (virus). Plasmid is extra nuclear circular genetic material present in bacteria e.g., F-factor, R-factor. F-factor is responsible for sexual reproduction and R-factor for resistance against antibiotic drugs. Pili are made up of protein pilin. They form conjugation tube during conjugation. These are present in gram (-) negative bacteria.
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