by s1 nuclease treatment of briefly renatured single-stranded dna the terminal duplication-inversion previously detected in this dna ( arnberg et al . ( 1975 ) biochim . biophys . acta 383 , 359 -- 369 ) has been isolated and shown to contain both 21-s ribosomal rna genes .
C0012935
single-stranded dna
C0012854
dna