A mutation at a gene locus changes a character due to change in
1. DNA replication
2. Protein synthesis pattern
3. RNA transcription pattern
4. Protein structure
Which one of the following is a wrong statement regarding mutations?
| 1. | Cancer cells commonly show chromosomal aberrations |
| 2. | UV and Gamma rays are mutagens |
| 3. | Change in a single base pair of DNA does not cause mutation |
| 4. | Deletion and insertion of base pairs cause frame-shift mutations |