Phylogenetic tree of subclade T tested for association with ALTree. (a) Phylogenetic tree of subclade T with all observed haplogroups. A homogeneity test is performed at each level of the tree. (b) First level of the phylogenetic tree of subclade T. Averaged counts, ranges and proportions of affected and unaffected observed in resamplings are indicated below each subclade. T2* represents the entire T2 subclade.