Microbiology General 22433fe3 False about C. diphtheriae A Toxin production is chromosome mediated B Toxic production is phage mediated C Toxic to hea and neuron D Toxin inhibitis protein synthesis High-Yield Explanation Ans. (a) Toxin production chromosome mediated Already explained Note: Toxicity of corynebacterium is under control of phage gene, but the invasiveness is under control of bacterial gene.