Comparison of pig PAR gene content across species. The currently known genes in the pig PAR are shown based on the boundary established in this study. Orthologous genes are shown in other mammalian lineages as available in Ensembl (http://www.ensembl.org webcite). A phylogeny is shown below following . The pig PAR appears to reflect the ancestral artiodactyl PAR based on similarity to cow and the closest outgroup, dog; the horse PAR has contracted . Blue outlines represent the approximate extent of the PAR in each species. Solid lines link orthologous genes from adjacent species; dotted lines link orthologous genes between non-adjacent species.
Skinner et al. BMC Genetics 2013 14:3 doi:10.1186/1471-2156-14-3