Fig. 1.

(A) Plot of the rates $\alpha (s,t)$ with $\overline{\alpha }(t)=0.5$ and $\beta (x,p,s)$ with $x=4$ and $p=3$ in terms of the time $s$ since the damage. (B) Plot of the adaptation rate $\beta (x,p,s)$ in terms of the time $s$ since the damage for $x=4$ and $p=0.5,1,3,10$