Figure 2

Example of multilocus genotype tree. This tree is constructed by considering sites left to right along the binary multilocus genotype (BMG). The root of the tree contains all 100 individuals. As we consider successive SNPs, all nodes containing both 0 and 1 individuals at the SNP are split, with individuals carrying a 1 put on the top branch and those carrying a 0 on the lower branch. The leaves of the tree (yellow background) carry full-length BMGs, and internal nodes (blue) carry partial BMGs, with sites that can carry 0 or 1 labeled with a hash (#). Case and control counts are given by numbers above and below the node label, respectively.