[edsheppa]

Well, I wasn't convinced by my reasoning so I wrote a simple simulation of an asexual population. The poulation is kept in a range. Normal individuals can mutate and mutants can umutate with the sampe probability. As seems obvious in retrospect, for this simple case in the long run an individual has a 50% chance of being a mutant.

[maro]

Can you summarize your model constraints in a post?