Fig. 5

Allele frequencies of the significant SNPs that are linked to the TCF21 gene. Allele frequencies of the significant SNPs within the regions of interest on chromosomes 3 and 10 were calculated for both lean and fat lines. When plotted against each other, SNPs near the diagonal demonstrated similar frequencies between the two lines. The SNP associated with TCF21 is one of the SNPs that deviates from the diagonal (a). When the individuals were characterized by the genotypes associated with the TCF21 SNP (Gga_rs14364352), individuals with genotypes AG (170 birds) and GG (52 birds) appear to have larger values for both TeW and TeP than those with AA (253 birds) genotype (b). The individuals with AG and GG genotypes have higher values than individuals with AA genotypes for both TeW (c) and TeP (d). This trend was the same in both lean and fat lines. The individuals with AG and GG genotypes also have larger variations in trait values than individuals with AA genotypes. Standard error of the mean is indicated by the size of the circles