The two antibiotic resistance genes on vector pBR 322 are for:
| 1. | Ampicillin and Tetracycline |
| 2. | Ampicillin and Chloramphenicol |
| 3. | Chloramphenicol and Tetracycline |
| 4. | Tetracycline and Kanamycin |
| Assertion(A): | Restriction enzymes are molecular scissors. |
| Reason(R): | They identify DNA sequence and cut them. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
A gene whose expression helps to identify transformed cell is known as:
1. Selectable marker
2. Vector
3. Plasmid
4. Structural gene