試題詳解

4.The double helix of DNA in the B-form is stabilized by:
(A) covalent bonds between the 3' end of one strand and the 5' end of the other.
(B) hydrogen bonding between the phosphate groups of two side-by-side strands.
(C) hydrogen bonds between the riboses of each strand.
(D) nonspecific base-stacking interaction between two adjacent bases in the same strand.
(E) ribose interactions with the planar base pairs.