For the helix in double-stranded B-form DNA, the majority of the stability can be attributed to:
A) base-pairing interactions via H-bonds.
B) interactions along the phosphate backbone.
C) base-stacking interactions via van-der-Waals interactions.
D) covalent bonds between adjacent bases in one strand.
E) ionic interactions with metal ions.

Question

Quizplus · Accepted Answer

Base-stacking interactions via van der Waals forces significantly contribute to the stability of the double-stranded B-form DNA, more so than the hydrogen bonding between base pairs. These interactions occur between the aromatic bases and help to stabilize the helical structure by minimizing the energy of the system.

For the Helix in Double-Stranded B-Form DNA, the Majority of the Stability