The scientist/s that used x-ray diffraction to help reveal the structure of DNA is/are:

• A. Watson and Crick.
• B. Hershey and Chase.
• C. Avery and Macleod.
• D. Chargaff.
• E. Franklin.

Answer: (E)

Verified step by step guidance

1. Understand the context: The problem is asking about the scientists who used x-ray diffraction to reveal the structure of DNA.
2. Recall the historical contributions to DNA structure discovery: X-ray diffraction was a key technique used to understand the double helix structure of DNA.
3. Identify the scientists associated with x-ray diffraction: Rosalind Franklin is known for her critical contributions using x-ray diffraction, which provided key insights into the DNA structure.
4. Differentiate between the listed scientists: Watson and Crick are known for proposing the double helix model, but they used Franklin's x-ray diffraction data. Hershey and Chase conducted experiments on DNA as genetic material, not its structure. Avery and Macleod worked on DNA as the genetic material. Chargaff discovered base pairing rules.
5. Conclude that Rosalind Franklin's work with x-ray diffraction was pivotal in revealing the structure of DNA, making her the correct answer.