Figure 1

Simulation results showing the effect of recombination on the effectiveness of selection for codon usage under inbreeding. The figure shows the relationship between the recombination parameter 4N _e r and the frequency of the optimal codon (F _op ) for selfing rates (S) of 0 (black bars), 0.5 (gray bars) and 0.99 (white bars). (a) Value of the strength of selection 4N _e s = 1; (b) 4N _e s = 4. All simulations involved 1,000 sites where 4N _e u = 0.04.