Question

who used x - ray diffraction to analyze the structure of dna?
a erwin chargaff
b francis crick
c rosalind franklin
d james d. watson

Explanation:

Erwin Chargaff proposed base-pairing rules; Francis Crick and James D. Watson constructed the double helix model using data from others; Rosalind Franklin used X-ray diffraction (producing Photo 51) to analyze DNA structure.

Answer:

c. Rosalind Franklin