Fig. 1

Single-population GWAS results for heart weight and liver weight. Manhattan plots for heart weight in F₂ (a) and Laiwu pigs (b), and for liver weight in F₂ (c) and Laiwu pigs (d). In the Manhattan plots, negative log₁₀ p values of the SNPs were plotted against their genomic positions; the red and green dots represent SNPs that exceeded the suggestive and 5 % genome-wide significance thresholds, respectively; solid lines indicate the 5 % genome-wide Bonferroni-corrected threshold