Evolutionary dynamics of defense mechanisms, representatives of each of the six regions of the phase diagram. Black: fraction of hosts with adaptive immunity; red: average suicide propensity in hosts with adaptive immunity; blue: average suicide propensity in hosts without adaptive immunity. Maximum suicide efficacy has been fixed to CD
= 0.3, values of pII and pAI have been chosen from the phase diagram in Figure 4C to represent each possible evolutionary outcome. Population structured in a square grid with no mixing.