Figure 1

The deFinetti triangle. The deFinetti triangle shows genotype frequencies and allele frequencies for each SNP. For example, the purple point displays one SNP. The two homozygote genotype frequencies for a SNP are read as length of the projections along the sides of the triangle (shown in red and blue). The proportion of heterozygotes (green) is given either on the vertical axis or as difference between 1 and the homozygous frequencies. The allele frequencies are shown on the horizontal axis. The curve displays the genotype distributions that are exactly in HWE.