Fig. 4

Analysis of polymorphic STR (pSTR) expansions. a Bar plot showing the distribution of expansion score, the genes corresponding to the four loss-of-function expanded pSTRs are highlighted and indicated by arrows. b Distribution of the copy number of alleles at the expanded pSTRs in the A3GALT2 gene. c Heatmap displaying the distribution of genotypes of expanded/un-expanded (1/0) alleles in domestic pig and wild boar populations in Asia and Europe, where expanded/un-expanded alleles are defined as those with repeat numbers > / < 12.5