extrachromosomal rDNA circle

Term ID

GO:0005728

Synonyms

• extrachromosomal ribosomal DNA circle

Definition

Circular DNA molecules encoding ribosomal RNA that are replicated independently of chromosomal replication. These molecules originate in the chromosome but are excised and circularized, often by intramolecular homologous recombination between direct tandem repeats. 12044934

References

Ontology

GO: Cellular Component    QuickGO    AmiGO