Analysis of the frequency of non-synonymous (dN) and synonymous (dS) substitutions among wild and domestic pigs from Europe and Asia.

n = number of sequenced chromosomes as indicated in Table S3; Asian alleles found in European pigs and European alleles found in Asian pigs were excluded from the analysis since they most certainly reflect recent introgressions.
1The three synonymous substitutions present in both Asian wild boars and Asian domestic pigs (Table S2) were excluded from the analysis in order to restrict the analysis to those substitutions that occurred subsequent to domestication.