| Name: | extension |
|---|---|
| Synonyms: | yolk extension |
| Definition: | The posterior elongated region of the yolk cell that forms during the segmentation period. |
| Ontology: | Anatomy Ontology [ZFA:0000106] |
| Name: | degenerate |
|---|---|
| Synonyms: | degeneration |
| Definition: | A structural quality inhering in a bearer whose structure deteriorates or is lost over time due to an active pathological process. |
| Ontology: | Phenotypic Quality Ontology [PATO:0000639] |