studies on the buoyant density of high-molecular-weight dna homologous to ribosomal rna have led to the conclusion that the ribosomal rna cistrons occur in groups attached to a relatively large amount of nonribosomal rna and suggest that ribosomal rna cistrons are distributed over a number of yeast chromosomes .
C0035668
rna
C0035701
ribosomal rna