<http://purl.obolibrary.org/obo/pr#1to1_ortholog_of> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#TransitiveProperty> . <http://purl.obolibrary.org/obo/pr#1to1_ortholog_of> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#ObjectProperty> . <http://purl.obolibrary.org/obo/pr#1to1_ortholog_of> <http://www.w3.org/2000/01/rdf-schema#comment> "Definition is modeled after the definition in the Homology Ontology term HOM:0000020." . <http://purl.obolibrary.org/obo/pr#1to1_ortholog_of> <http://purl.obolibrary.org/obo/IAO_0000115> "If a and b are genes, a 1to1_ortholog_of b iff neither a nor b was duplicated after the speciation event that created them. If a and b are proteins, then a 1to1_ortholog_of b iff a has_gene_template some gene A and b has_gene_template some gene B and A 1to1_ortholog_of B." . <http://purl.obolibrary.org/obo/pr#1to1_ortholog_of> <http://www.geneontology.org/formats/oboInOwl#hasOBONamespace> "protein" . <http://purl.obolibrary.org/obo/pr#1to1_ortholog_of> <http://www.w3.org/2000/01/rdf-schema#label> "1to1_ortholog_of" . <http://purl.obolibrary.org/obo/pr#1to1_ortholog_of> <http://www.geneontology.org/formats/oboInOwl#id> "1to1_ortholog_of" .