Unary Operators and RNA/DNA Strands

RNA and DNA strands could be interpreted as being generated by unary operators.  Since RNA and DNA strands are linear structures, where each element(base) has two neighbors (except for the first and last that have one neighbor each), it is possible to define one or several unary operators  that would enable conversion of each base into another base(or into itself) and, in this way, generation of the entire strand.