| Assertion (A): | To diagnose presence of a specific DNA segment in a mixture, complementary pairing between nucleotides is exploited. |
| Reason (R): | DNA probes having radioactive isotopes help to detect DNA by autoradiography. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True and (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |