[high_density]

even if the 'gradually-evolving' process isn't provided, isn't there some genetic chance? (be it really small -- like lottery?)

[war1025]

The mutation would have to happen in the lab and not in the wild, since the pills would come from the lab.

I imagine if such a thing did occur, they would just kill the batch they were breeding and start over from a known strain.

(Not a microbiologist, so who knows though)