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RO is an ontology of relations for use with biological ontologies

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We have some cases where a relation in RO and a relation in BFO have different IRIs and the same label 1. This *used* to be the case for http://purl.obolibrary.org/obo/RO_0000052...

RO has a handful of classes used for D/R constraints. Should be moved to the appropriate obo ontology or to core, see: https://github.com/OBOFoundry/Experimental-OBO-Core/issues/8

RO-Core
obsolete
stale

Discussion in https://github.com/oborel/obo-relations/pull/742 led to understanding that "in taxon" allows both organism and process/life stage assignment to organism taxon. The "life cycle stage of" synonymy allows "in taxon" to be...

We have a list of 38 new object properties that we're using in our ontology (the Sickle cell Disease Ontology) and would like you to consider including them in the...

question
new term request
phenotype
stale

IAO uses relationships like part-of and has-part to model the structure of documents (informational entities, GDCs). These are broad RO relations, unconstrained by domain and range (but additional universal axioms...