The study deals with the description and characterization of twohepta–oligonucleotides (DNA and RNA) forming special structures.We studied their electrochemical behaviour by means of cyclicvoltammetry (CV) and elimination voltammetry with linear scan(EVLS) in combination with adsorptive stripping (AdS) technique.Differences in electrochemical behaviour of hepta–deoxyribonucleotide and its RNA analog were discussed with regardto their different structures in solutions and their melting points.
