Fig. 4From: The genetic basis of hybrid male sterility in sympatric Primulina speciesThe effect size, additive effect distribution, and dominance effect distribution of QTLs for hybrid PFR are shown in (a), (b), and (c). The x-axis indicates the name of each QTL. The y-axis in a indicates the phenotypic variation explained by each QTL (PVE). The y-axis in b and c indicates the additive and dominance effects of the P. depressa allele relative to the P. danxiaensis allele at each QTLBack to article page