Additional file 2: of Gene loss, adaptive evolution and the co-evolution of plumage coloration genes with opsins in birds

Log GC ratio pairwise comparisons between the avian opsins. The presented p-values are corrected using the Bonferroni adjustment. p-values colored in red represent statistically non-significant differences between the average log GC ratios of the compared genes. Pairwise comparisons for the sw1, sw2 and lw opsins are highlighted in grey. (PDF 27 kb)