No, I described a gene mutation - nothing more.
Evolution does not say that bacteria has morph into "something else". Please stop with that "its still bacteria" "its still a fruit fly" argument! The mutation that allows that bacteria to digest nylon is what EVOLUTION is.
That's microevolution at best. For example, virulent E.Coli is still E. Coli. In fact, there are also back mutations in which a mutated bacteria can revert to its previous form (which is problematic for Darwin's theory).
That would depend on the topology of the fitness landscape and how it is assumed to vary over time.
Cheers!