De Finetti diagram for genotype frequencies of all SNPs used for the map. The three large central rings show the significance limits for Chi square values of 0.05, 0.01 and 0.001 for deviation from Hardy Weinberg expectations. Ideally (i.e. without an transmission ratio distortion), all markers would fall inside the rings. SNPs falling below the centre show a heterozygote deficiency, while SNPs falling close to the left and the right margin of the triangle show a homozygote deficiency. Markers around the two previously mapped infertility loci show strong homozygote deficiency for one of the two parental alleles each, while the majority of the other markers show a slight heterozygote deficiency. Genotypes are German (AA), Finnish (BB) and heterozygotes (AB).