These are SNPs from sequencing 9 gene regions, including intron regions.

They were sequenced for a set of 96 individuals, 40 A. formosa, 40 A. pubescens and 16 plants from an A. formosa x A. pubescens hybrid zone.

The only fixed polymorphisms (polymorphic in one species, fixed for one allele in the other) are rare alleles (average 1.6% in polymorphic spp)

Shared polymorphisms have very similar frequencies across spp.