Figure 2

A chromosomal fission of European ssa01 creating an acrocentric chromosome in North American Atlantic salmon (ssa01q-fission). The European ssa01 is shown to the right and the new acrocentric chromosome in North American salmon is shown to the left. Numbers correspond to SNPs listed in Additional file 1. SNPs in colors are shared between Atlantic salmon from both sides of the Atlantic Ocean. Red lines extend to the set of SNPs with limited recombination in the male map.