Fig. 2.

Allele-frequency spectrums for SNPs within supergenes (A–C) SG02 (orange), (D–F) SG07 (burgundy), and (G–I) SG12 (green) and (J–L) genome-wide (gray) distributed SNPs (excluding all SNPs on chromosomes 2, 7, and 12) for coastal cod from locations LIL (A, D, G, and J), RIS (B, E, H, and K), and offshore cod from location NS1 (C, F, I, and L). Derived SNP allele frequencies are shown on the x axis, with relative fraction of SNPs on the y axis. For comparison with observed allele frequencies a theoretical distribution of allele frequencies under neutral equilibrium conditions is included as stippled lines.