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Drosophila Phenotype Ontology

This ontology organises the domain of Drosophila phenotypes. It was previously maintained as part of the FlyBase controlled vocabulary, but has been officially releases as a separate project since 25 July 2019. Older releases can still be accessed here.

More information can be found at


Stable release versions

The latest version of the ontology can always be found at:

Editors' version

Editors of this ontology should use the edit version, src/ontology/dpo-edit.owl


Please use this GitHub repository's Issue tracker to request new terms/classes or report errors or specific concerns related to the ontology.


This ontology repository was created using the ontology starter kit