Hairpins often form at palindromic sequences in single strands of either rna or dna. however, several key features differentiate the helical structure of an rna and a dna hairpin.

select the statements that describe the helical structure of an rna hairpin. a) the hairpin adopts a right-handed helix with a diameter of 20 å .b) the pentose in the hairpin adopts only the c-3\' endo pucker conformation. c) the hairpin adopts a right-handed helix with a diameter of 26 å .d) the hairpin contains g: c, a: u, and sometimes g: u base pairs. e) the pentose in the hairpin adopts either the c-2\' or the c-3\' endo pucker conformation.