Status of the Rice Chromosome 4 Map
| Genetic Position (cM) | Physical length (Mb) | CUGl's contigs | Gap size (Mb) | |
| CTG4-1 | 0.0–7.1 | 1.6 | contig 297, 78, 79 | |
| 0.2 | ||||
| CTG4-2 | 7.9–12.2 | 2.8 | contig 281, 80 | |
| 0.3 | ||||
| CTG4-3 | 13.1–19.6 | 3.5 | contig 273, 81, 84 | |
| 0.2 | ||||
| CTG4-4 | 19.6 | 0.8 | contig 404 | |
| 0.2 | ||||
| CTG4-5 | 19.6–24.9 | 6.4 | contig 82, 254, 83, 421 | |
| 0.1 | ||||
| CTG4-6 | 25.4–30.8 | 2.2 | contig 257 | |
| 0.5 | ||||
| CTG4-7 | 41.5–65.3 | 3.8 | contig 295, 85, 86, 322 | |
| 0.4 | ||||
| CTG4-8 | 67.2–77.9 | 3.2 | contig 418, 88, 89 (partial) | |
| 0.1 | ||||
| CTG4-9 | 78.0–78.2 | 0.5 | contig 269 | |
| 0.4 | ||||
| CTG4-10 | 81.7–84.1 | 1.5 | contig 403, 90, 91 | |
| 0.1 | ||||
| CTG4-11 | 84.5–129.6 | 8.2 | contig 92, 59 | |
| Total | 34.5 | 27 | ∼2.5 |
[i] Contigs with their respective genetic locations and physical lengths are shown together with the CUGI's contigs. The gaps between the CTG4 contigs are estimated by either YAC physical map (Saji et al. 2001) or genetic map based on the average of recombination frequency within the regions. All of the bridging clones are merging the CUGIs contigs are as following: OSJNBa0094O15 and OSJNBb0004G23 for joining contigs 297 & 78, OSJNBa0054H10 for contigs 78 & 79, OSJNBa0039C07 for contigs 295 & 85, OSIGBAC-B0812A04 for contigs 418 & 88, and OSJNBb0039L24 for contigs 90 & 91.