MCQOPTIONS
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| 1. |
Operon is a: |
| A. | Sequence of three nitrogen bases determining a single amino acid. |
| B. | Set of closely placed genes regulating a metabolic pathway in prokaryotes. |
| C. | Segment of DNA specifying a polypeptide. |
| D. | Gene responsible for switching on and switching off other genes. |
| Answer» C. Segment of DNA specifying a polypeptide. | |