Answer:
X-ray diffraction data was used to determine the helical structure of DNA, including the distance between the bases, the angle between the base pairs, and the distance between the two strands of the helix. The X-ray diffraction pattern also revealed that the DNA molecule is composed of repeating units, with each unit containing a phosphate group, a sugar molecule, and a nitrogenous base. This information was critical in understanding the structure and function of DNA and its role in heredity.
Step-by-step explanation: