Figure 6

Changes in allele frequencies of two over-dominant QTL in the parental breeds over generations. The plotted values are changes in allele frequencies of two over-dominant QTL with major dominance effects in the sire and dam breeds over generations of selection, under the additive model and the dominance model, in scenario 1, with one chromosome and large dominance; results are means from 100 replicates in a given random simulation: (a) shows alternate alleles approaching fixation in the sire and dam breeds more rapidly with the dominance than the additive model and (b) shows the same allele approaching fixation in both parental breeds with the additive model, in contrast to the dominance model.