Photo 51 refers to an image of
- A. a crater on the Moon
- B. DNA molecules ✓
- C. the virus responsible for COVID-19
- D. the virus responsible for common cold
Correct Answer: B. DNA molecules
Explanation
Photo 51 is an X-ray diffraction image of crystallized DNA taken by Rosalind Franklin in 1952, which was critical for identifying its double-helix structure.
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