Figure 6
From: Exceptional error minimization in putative primordial genetic codes
Error minimization level of 2-letter codes. Starting from a random permutation of amino acids assignments among the supercodons highlighted in Fig. 5, optimization was performed to find the least costly assignment. (a) 9 amino acids, the optimum code is shown, MP = 0.94; (b) The number of supercodons coding for Leu is fixed to 2; MP = 0.987.