The 'double helix' model of DNA was first proposed by Watson and Crick based on X-ray diffraction data produced by:
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Correct answer: Rosalind Franklin
Rosalind Franklin's 'Photo 51' was critical in demonstrating the helical nature of DNA. Her data allowed Watson and Crick to determine the correct spatial arrangement of the nitrogenous bases and the phosphate backbone.
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More DNA Structure questions
- Which nitrogenous base is found in DNA but is replaced by Uracil in RNA?
- What is the specific orientation of the two strands in a DNA molecule?
- The width of a standard B-DNA double helix is approximately:
- Which of the following is a purine base?
- In the DNA structure, the nitrogenous base is attached to the sugar molecule at which carbon position?
- What is the primary difference between the sugar in DNA and the sugar in RNA?