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Used X-rays to determine the shape and size of the DNA molecule

a) Frederick Griffith
b) Erwin Chargaff
c) James Watson
d) Rosalind Franklin

User Enn
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Final answer:

Rosalind Franklin used X-ray diffraction to demonstrate the helical nature of DNA, while Watson and Crick formulated the structural model of DNA.

Step-by-step explanation:

Rosalind Franklin used X-ray diffraction methods to demonstrate the helical nature of DNA, while Watson and Crick formulated the double stranded structural model of DNA. Franklin's X-ray diffraction images of DNA provided the crucial information that allowed Watson and Crick to confirm that DNA forms a double helix and determine details of its size and structure.

User Stewsha
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