how many types of operons are there? Posted in Genetics 1 Comment Operons are mainly of 2 types, viz. inducible operon and repressible operon. Each one can again be sub divided into 2 forms e.g. negative system and positive system. Share this:EmailFacebookGoogleRedditLike this:Like Loading... Related posts: how many types of operons are there? inducible system and repressible system what do you mean by operon?