Writer:
I could be wrong; I haven’t studied biology beyond the high school level.
I don’t know what you mean the Methicillin resistant staph has completely different properties than its non resistant cousin. I assume it has a genetic aberration within the range that is normal for what it aberrated from, and those are the ones that survived the methicilin.
That fits within what I call the obvious type of evolution. If I walk among my herd of goats and take out all the spotted ones, after a few years, there will be no more spotted ones in my herd. But they will all still be goats.
When your bacteria evolves into a virus, then we’ll talk.