PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15509727-3 2005 We apply the MM01 model to the possible molecular adaptation of cytochrome b among cetaceans because it does not rely on a dN/dS ratio, instead evaluating positive selection in terms of the amino acid properties that comprise protein phenotypes that selection at the molecular level may act upon. dn 123-125 mitochondrially encoded cytochrome b Homo sapiens 64-76