Figure 6.

Empirical behavior of the degree of dominance h from 208 GAS showing significant genotype effects. The plots show -log[P] as a function of h for (a) the co-dominant and (b) the additive contrasts, and the horizontal line at -log[P] = 1.3 represents the critical value above which statistical significance (P < 0.05) is attained. There is a clear reverse behaviour in the plots and, as predicted from our numerical study, statistical significance of the additive model was found when under- or over-dominance were absent (i.e., |h| ≤ 1).