Fig. 2

Detection of outlier SNPs of the OXTR gene using FDIST. FDIST suggests the SNPs rs2268494, rs2268498, rs4643699, and rs1488467 are under balancing selection, whereas SNP rs59190448 is under positive directional selection. x-axis: estimated heterozygosity values; y-axis: FST-values. The red area indicates positive selection, the grey area neutrality, and the yellow area balancing selection. Confidence intervals represent borders between “selection areas”