The steady state translation rates with slow codons and different update rules. The steady state translation rates for the case a) a single slow codon and different update rules; b) two consecutive slow codons; and c) slow codons and the Petri net model. The parameters are set as α=β=1. The elongation rates are also equal to 1 except the slow one(s). The cases of a single slow codon and two consecutive slow codons are considered, where for the first case the slow codon is on codon 25 and for the second they are on codons 25 and 26. In the second case, the two consecutive slow codons have the same elongation rate.