Figure 4

Relative proportions of eQTL types. Relative proportion of eQTL-types for cis-eQTLs common to all 3 methods and specific to each method; white (bottom), skewed genotype group sizes; yellow (middle), non-linear eQTLs; red (top), others. The absolute number of eQTLs in each group is 7,193 (Common), 1,663 (kruX), 701 (ANOVA) and 5,102 (Linear), cf. Figure 3(b).