Figure 2.
Patterns of SNP among subspecies of Apis mellifera. (A) Total numbers of SNPs identified in the four groups of A. mellifera subspecies. Each SNP is categorized by the set of groups in which it is observed to be polymorphic. The majority of SNPs are variable in at least three groups, and very few are restricted to a single group. (B) Levels of genetic variation among A. mellifera subspecies estimated using Watterson's estimator (Watterson 1975). Subspecies are grouped according to lineage group (M, C, O, and A).