Figure 7
From: Exceptional error minimization in putative primordial genetic codes

The distributions of random code costs for the experiments in Fig. 6. The green line shows the cost of the code from Fig. 5, the red line shows the mean of the distributions. (a) 9 amino acids from Fig. 5, the distance from the mean to the red line is 2.16 standard deviations; (b) Two supercodons assigned for Leu; the distance from the green line to the mean is 2.6 standard deviations.