Figure 2

Haplotype pattern of LD block region on the chromosome X (1 SNP/0.3 Mb). Purple and blue represent the same or opposite alleles in the Wuzhishan reference genome, respectively. The percentages on the right are the proportions of samples with corresponding haplotypes in the total sample (n = 31). Red blocks represent LD blocks in the 40.09 Mb region. Haplotype S is identified in South China (domestic pigs and wild boars) (blue regions). Haplotype N is identified in European (domestic pigs and wild boars) as well as wild boar of North China (purple regions). Six derived Haplotypes (Haplotype N-S-1-6) are identified in domestic pigs of North China (purple and blue regions).