Fig. 5.

Selection strength on genes of different regulatory modules, evaluated using sweep length and level of LD. Selection strength was evaluated using the length (x axis) and the average LD (r² measure) of each sweep window in the FW population. The vertical dashed line indicates the average sweep length (∼16 kb). Gray dots and associated bars indicate the genome-wide average and standard error of the average r² value for different lengths of genomic region (the same sizes as the swept regions). Black dots and associated bars indicate the average, and standard error of the average value of r² in each swept region. The color code pinpoints genes of the four different modules of coregulated swept genes identified by hierarchical clustering of expression data (fig. 4).