Fig. 2From: A worldwide map of swine short tandem repeats and their associations with evolutionary and environmental adaptationsCharacterization of polymorphic STRs in the pig genome. a Distribution of allele number of polymorphic STRs (pSTRs), inner density plot shows the distribution of the number of alleles of pSTRs by their repeat unit lengths. b Venn plot showing shared and specific pSTR alleles among outgroups, wild boar, and domesticated pigs. c Enrichment of polymorphic STRs in different genomic feature regions; the upper and bottom bar plots show the density distribution and fold-enrichment of different types of pSTRs in different genomic feature regions, respectively. Di-, Tri-, Tet-, Pen-, and Hex- denote dinucleotide, trinucleotide, tetranucleotide, pentanucleotide, hexanucleotide pSTRs, respectively. d Fold-enrichment of different types of trinucleotide pSTRs in different genomic feature regions (top plot), and specifically in coding (middle plot) and 5′ UTR (bottom plot) regionsBack to article page