Which scientist was responsible for producing the X-ray diffraction pattern of DNA which was key to discovering its double helical structure?

The scientist responsible for producing the X-ray diffraction pattern of DNA was Rosalind Franklin. Her X-ray crystallography work provided crucial evidence that helped reveal the helical structure of DNA. Although James Watson and Francis Crick are often credited with the discovery of the DNA double helix, they relied significantly on Franklin's data, particularly the famous "Photo 51." Franklin's contributions were vital in understanding the molecular structure of DNA.