(A) Complete fused codes versus probability of fusion. Evolution was stopped when the first code with ≥20 functions appeared in an environment. The fraction, among 500 environments, of such ≥20 function codes that acquired assignments from fusion is plotted versus the probability of fusion during a passage, Pfus. Pmut = 0.00975, Pdecay = 0.00975, Pinit = 0.150, Prand = 0.050, Ptab = 0.08. (B) Complete fused codes vs probability of coding table initiation. Evolution was stopped when the first code with ≥20 functions appeared in an environment. The fraction, among 500 environments, of such ≥20 function codes that acquired assignments from fusion is plotted versus the probability that a new coding table is initiated during a passage, Ptab. Pmut = 0.00975, Pdecay = 0.00975, Pinit = 0.150, Prand = 0.050, Pfus = 0.002.
