Explore the ontology

Browse the current release

Follow the hierarchy to explore sequence features, attributes, variants, and collections. Select a term to read its definition and relationships.

Use the arrows beside a term to show or hide its subclasses. Terms with more than one parent appear in each relevant branch. Obsolete terms are grouped separately at the end of the hierarchy.

Start with a top-level term

Looking for a specific name or ID? Search the ontology.