Figure 2

Average values of population densities as function of μ and typical dynamical behavior. (a) Values of the average density $\overline{\rho }$ (black curve) of sequences folding into the target structure (hairpin), of the probability $\overline{\rho }$ _C (red line) that the consensus sequence folds into the target structure, of the probability $\overline{\rho }$ _S (green line) that the consensus structure coincides with the target structure, and of the fraction $\overline{\rho }$ _M (blue line) of the most abundant sequence in the population. Population size is N = 602; averages over 4000 generations and 25 realizations have been performed. (b) Temporal dynamics (interval of 50 generations starting at generation 2080 after initialization of a single run) of ρ (black diamonds), ρ _C (red crosses), and ρ _S (green circles) for μ = 0.030. Average values are $\overline{\rho }$ = 0.323, $\overline{\rho }$ _C = 0.749, $\overline{\rho }$ _S = 1.0. For better visualization of the values of ρ _C and ρ _S , the values corresponding to 1 are drawn on the line 0.9 and the values corresponding to 0 are drawn on the line 0.1.