Figure 2: Heatmap of pairwise IBD estimates for the 472 cattle in the Bovine HapMap data. The blocks along the diagonal are breed groups. Within breed groups, it is common for pairs of “unrelated” animals to have IBD sharing estimates between 10% and 40%, as each breed has varying degrees of homogeneity. The blocks away from the diagonal indicate that some pairs of breeds are genetically similar to one another.