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What is Toxin production by conjnebacterium diphtheriae is due to ? and explain in detail?
Ans. is 'c' i.e., Lysogenic conversion . The toxigenicity of the diphtheria bacilli depends on the presence in it of corynephages (tox +). Nontoxigenic strains may be rendered toxigenic by infecting them with beta phage or some other larger phage. This is known as lysogenic conversion or phage conversion.