in order to determine if the synthesis of the three ribosomal rnas are interdependent , the relative rate of 5s rna synthesis was measured in anucleolate mutants ( o/o ) , which do not synthesize any 18s or 28s rna , and in partial nucleolate mutants ( p ( l-1 ) /o ) , which synthesize 18s and 28s rna at 25 % of the normal rate .
C0035553
ribosomal
C0035705
28s rna