| Q.52 | What was discovered by James D. Watson and Francis Crick in 1953? | |
| Ans | 1. The amino acid sequences of proteins | |
| 2. spider silk proteins | ||
| 3. The double-helical structure of DNA | ||
| 4. Thalidomide |
Correct Ans Provided: 3
Date: 02/04/2023 Shift: Q. No: 52
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