Twenty-eight distinct amylase structural haplotypes identified in 94 haplotypes. The filled arrows indicate principal bundles representing homology relationships, whereas labelled open arrows indicate genes (1 indicates AMY1, 2A indicates AMY2A and 2B indicates AMY2B). The numbers in parentheses and the circle sizes indicate the number of haplotypes identified with a specific structure. Haplotypes are ordered by their relationship in the tree (left), which is generated from the Jaccard distance between haplotypes from the variation graph. Consensus structures, which refer to clusters of similar structures, are indicated (right). The names of the consensus structures are formatted H x A y B z , where x corresponds to the copy number of AMY1, y to the number of AMY2A, and z to the number of AMY2B. A y and B z are only included in the name when y or z does not equal to 1.