Deletion Yield by Mutagen
| Mutagen | No. of libraries | No. of 1° screens | No. of deletion mutants | Ratio of deletions/screens |
| DEO | 3 | 171 | 12 | 0.070 |
| EMS | 9 | 479 | 47 | 0.098 |
| ENU | 4 | 208 | 23 | 0.111 |
| UV-TMP | 4 | 135 | 29 | 0.215 |
[i] The total number of pool screens initiated (using a target window of 2800–3400 bp) and the total number of isolated deletions were tabulated for each mutant library.