The X-ray diffraction pattern for DNA suggested to Wilkins and Franklin all of the following features about DNA EXCEPT
A) a DNA molecule has a uniform diameter of 2 nanometers.
B) in a DNA molecule, A pairs with T and G pairs with C.
C) the DNA molecule consists of repeating subunits.
D) the phosphate-sugar ʺbackboneʺ of the molecule is on the outside of the DNA helix.
E) a DNA molecule is helical.

Question

Quizplus · Accepted Answer

The X-ray diffraction pattern suggested the helical structure, uniform diameter, repeating subunits, and the location of the phosphate-sugar backbone, but it did not reveal the specific base pairing of A with T and G with C. This specific pairing was determined through biochemical experiments by Watson and Crick, along with insights from Chargaff's rules.

The X-Ray Diffraction Pattern for DNA Suggested to Wilkins and Franklin