| Name: | oogonia |
|---|---|
| Synonyms: | |
| Definition: | An undifferentiated germ cell that proliferates rapidly and gives rise to oocytes. In zebrafish oogonia are round cells, with centrally located nucleoli, which are strongly basophilic. Oogonia in larva zebrafish fish are often found in clusters of two or four cells, corresponding to the second, or third oogonial divisions, presumably arising from mitotic divisions of primordial germ cells. |
| Ontology: | Anatomy Ontology [ZFA:0005878] |
| Name: | nucleus |
|---|---|
| Synonyms: | cell nucleus, horsetail nucleus |
| Definition: | A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent. |
| Ontology: | GO: Cellular Component [GO:0005634] QuickGO AmiGO |