Question

photo 51 is a picture of the structure of dna that was used to create a model of dna. who created the photo?
james watson and francis crick
erwin chargaff
rosalind franklin
friedrich miescher

Explanation:

James Watson and Francis Crick used Photo 51 to build their DNA double helix model, but they did not take the photo. Erwin Chargaff discovered base-pairing rules for DNA, and Friedrich Miescher first identified nucleic acids. Rosalind Franklin, using X-ray crystallography, captured Photo 51, the critical image of DNA's structure.

Answer:

Rosalind Franklin