Synthesis of Three Duplex Fragments
With the help of 15 oligonucleotides (single stranded), three duplex fragments, each with a single stranded end, were prepared. These three fragments consisted of the following: (i) the first 20 nucleotides, with the nucleotide residues 17-20 as single stranded; this fragment was called 'A'; (ii) the nucleotide residues 17-50 with single stranded regions 17-20 and 46-50; this segment was called 'B'; and (iii) the nucleotide residues 46-77 with single stranded region 46-50; this segment was called 'C'.



