extrachromosomal rDNA circle
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.
GO:0005727
extrachromosomal circular DNA
is_a
extrachromosomal ribosomal DNA circle
exact