Table I.
Median size of exons and introns in humans and select plant species
The ESTs were aligned to GenBank genomic data using BLAT (Kent, 2002). The lengths of the exons and introns were extracted from the alignment results (see “Materials and Methods”). The data source and methods are described in the “Materials and Methods.” The data for humans is as described (Collins and Penny, 2006).
| Arabidopsis | Tomato | Oryza-‘indica’ | Oryza-‘japonica’ | Maize | Human | |
|---|---|---|---|---|---|---|
| Exons median (mean) | 99 (116) | 105 (123) | 98 (115) | 99 (123) | 111 (150) | 124 |
| No. of exons | 23,156 | 3,090 | 21,585 | 36,145 | 706 | 283,216 |
| Introns median (mean) | 100 (177) | 201 (545) | 133 (358) | 139 (396) | 92 (688) | 1,422 |
| No. of introns | 40,827 | 4,833 | 38,224 | 60,773 | 2,338 | 252,375 |
| No. of ESTs | 94,278 | 13,075 | 46,833 | 109,619 | 16,696 | – |
| ESTs with constitutive introns | 51,534 | 8,224 | 29,488 | 61,853 | 7,518 | – |
| % ESTs with constitutive introns | 55 | 63 | 63 | 56 | 45 | – |