Which of the Following Statements About Nucleic Acid Secondary Structure

Multiple Choice

Which of the following statements about nucleic acid secondary structure is FALSE?

A) The width of the major and minor grooves is more equal in the A-from of DNA than in the B-form.
B) Triple helices and G-quadruplexes can form at specific sequences in DNA.
C) DNA can form cruciform structures at palindromic sequences.
D) The A-form of DNA exists at high humidity, whereas the B-form exists at low humidity.
E) Some nucleic acids can form a zig-zag structure or Z form.