title: How the ratio of nonsynonymous to synonymous pseudogene substitutions can be less than one.
authors.affiliation: Max-Planck-Institut für Biologie, Abteilung Immunogenetik, Tübingen, Germany.
authors.forename: Y
authors.initials: Y
authors.lastname: Satta
mesh_terms: D000818:Animals; D005075:Biological Evolution; D003062:Codon / Q000235:genetics; D005802:Genes, MHC Class II / Q000235:genetics*; D006684:HLA-DR Antigens / Q000235:genetics*; D006801:Humans; D008957:Models, Genetic; D011323:Primates; D011544:Pseudogenes / Q000235:genetics*
chemical_list: D003062:Codon; D006684:HLA-DR Antigens