Table 3.
Organization of fish Igf2 genes
Length is given in base pairs.
| Species | Exon 1 | Intron 1 | Exon 2 | Intron 2 | Exon 3 | Intron 3 | Exon 4 | Intron 4 | Exon 5 | Gene length |
|---|---|---|---|---|---|---|---|---|---|---|
| Tetraodon (T. nigroviridis) | 212 | 1217 | 151 | 1352 | 182 | 1294 | 3557 | 7920 | ||
| Fugu (T. rubripes) | 212a | 899 | 151 | 1445 | 182 | 1305 | 3708a | 8043 | ||
| Stickleback (G. aculeatus) | 206a | 920 | 151 | 1473 | 182 | 1378 | 3701a | 8217 | ||
| Medaka (O. latipes) | 306a | NDb | ND | ND | 171 | 1731 | 2929a | 5475 | ||
| Cod (G. morhua) | 195a | 777 | 151 | 3156 | 182 | 1946 | 6119a | 15,139 | ||
| Cave fish a (A. mexicanus) | 455 | 2224 | 139 | 4954 | 176 | 3341 | 2028 | 13,316 | ||
| Cave fish b (A. mexicanus) | 401 | 1035 | 151 | 2899 | 182 | 958 | 3530c | 9168 | ||
| Tilapia (O. niloticus) | 195a | 838 | 151 | 2620 | 182 | 1291 | 3548c | 8986 | ||
| Amazon molly (P. formosa) | 813 | 951 | 151 | 2276 | 184 | 1150 | 4264 | 9789 | ||
| Platyfish (X. maculatus) | 135a | 881 | 76 | 257 | 35 | 2078 | 243 | 1155 | 3409 | 7352 |
| Zebrafish a (D. rerio) | 185 | 318 | 133 | 705 | 176 | 2923 | 1545 | 5984 | ||
| Zebrafish b (D. rerio) | 158 | 1250 | 151 | 1881 | 182 | 991 | 2894 | 7506 | ||
| Spotted gar (L. oculatus) | 195a | 800 | 163 | 2218 | 176 | 1741 | 3934 | 9226 | ||
| Coelecanth (L. chalumnae) | 358 | 28077 | 163 | 18437 | 167 | 1126 | >213 | >48540 |