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Cellular and Molecular Biology

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X-Ray Crystallography and DNA Structure

CELLS-FT8DZ4

Rosalind Franklin carried out the X-ray crystallography procedure that provided some of the evidence that James Watson and Francis Crick used to propose a three-dimensional model of DNA.

Which of the following features of DNA was NOT suggested by Franklin's results?

A

The base-paring of A with T and of C with G.

B

The helical structure of the molecule.

C

The length of a complete turn of the helix.

D

The presence of repeated units within the molecule.