Source:http://linkedlifedata.com/resource/umls/id/C0035899
MSH: Genes, found in both prokaryotes and eukaryotes, which are transcribed to produce the RNA which is incorporated into RIBOSOMES. Prokaryotic rRNA genes are usually found in OPERONS dispersed throughout the GENOME, whereas eukaryotic rRNA genes are clustered, multicistronic transcriptional units.,NCI: The genomic sequence that encodes a ribosomal RNA molecule.