Fig. 4.
Quantitative trait association mapping. Log-transformed P values for 12,586,315 SNP associations with jaw size variation estimated by PLINK (n = 37 individuals). Dotted blue line shows Bonferroni-corrected level of significance (P < 4.0 × 10−9). Red squares show the 31 SNPs spread across 25 scaffolds most strongly associated with jaw size that are also fixed between specialists.