Figure 2

Three types of clusters during in silico analysis of interspecific EST-SNPs. a: Clusters with only inter-homoeologue SNPs (Both G. hirsutum and G. barbadense harbor two base types at a certain base, and no difference in base types exists between them); b: Clusters with inter/hemi-SNPs (G. hirsutum and G. barbadense harbor different base types at one or more bases); c: Clusters with only hemi-SNPs (One of G. hirsutum and G. barbadense harbors only one base type at a certain base, and the other one harbors two base types at the certain base. Base types between them are partially different).