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

question 25

Multiple Choice

The X-ray diffraction pattern for DNA suggested to Wilkins and Franklin all of the following features about DNA EXCEPT:

• A)a DNA molecule is helical.
• B)a DNA molecule has a diameter of 2 nanometers.
• C)one full turn of the DNA helix occurs every 3.4 nanometers.
• D)the phosphate-sugar "backbone" of the molecule is on the outside of the DNA helix.
• E)in a DNA molecule, A pairs with T and G pairs with C.

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