<prompt> The role of plasmids in conjugation was first described by Lederberg and Tatum46 in ?H.influenzaeCorynebacteriumPseudomonasEsch.Coli  <response>: Ans. is d i.e., E. coli Bacterial conjugation was first described by Lederberg and Tatum in a strain of E.coli K-12. . First example of gene transfer by transformation - Pneumococci . First example of restricted transduction -- E. coli . Example of lysogenic conversion --4 C. diphtheriae . First example of conjugation -- E. coli K12 . First example of transferrable multidrug resistance -- Shigella 