Which of the following does NOT describe the secondary structure of DNA as proposed by Watson and Crick?
A) The two strands of the double helix are stabilized by hydrogen-bonding between A and T and between G and C.
B) The two strands of the double helix run in opposite directions.
C) The distance between the 1' carbons of the deoxyribose units is the same between the A-T and the G-C base pair.
D) The phosphate deoxyribose backbones of the helix are on the outside.
E) The base pairs are stacked on one other with their planes at 180o to the helix axis.

Question

Quizplus · Accepted Answer

The base pairs in the DNA double helix are not stacked with their planes at 180 degrees to the helix axis; instead, they are perpendicular to the axis. This arrangement contributes to the stability and compactness of the DNA structure.

Which of the Following Does NOT Describe the Secondary Structure