tetrastrandEtymologyFrom tetra- + strand.nounA macromolecular structure composed of four strands (nucleotide chains).“One in vitro study suggested that trivalent Cr may have some base specificity in its reactivity; however, this was probably due to the nature of the ribopolymers that were examined since the polymer with higher reactivity formed tetrastrands and was compared with a polymer that did not form tetrastrands (14). Therefore, the higher binding of Cr to guanine may be due to the tetrastrand nature of th”