An abbreviated form of the Y chromosome parsimony tree shown in the accompanying poster enclosed in this issue. Mutation names are indicated on the branches. The subtrees corresponding to major clades A–T are collapsed in this figure and are shown in Supplemental Figures 1–13, 15–18, and in the accompanying poster enclosed in this issue, wherein the maximum parsimony tree of 311 Y chromosome haplogroups is shown. Haplogroup names are given at the tips of the tree, and major clades are labeled with large capital letters and shaded in color (the entire cladogram is designated “haplogroup Y”). Mutation names are given along the branches; the length of each branch is not proportional to the number of mutations or the age of the mutation. The order of phylogenetically equivalent markers shown on each branch is arbitrary.
