Table 3.
Conservation of intron positions in U{1:1} gene pairs
| U{1:1} ortholog pairs | U{1:1} random pairs | Nuclear gene random pairs | |
|---|---|---|---|
| Pairs with all conserved intron positions | 44.9% | 0.2% | 0.1% |
| Pairs with no conserved intron position | 44.4% | 79.6% | 58.9% |
| Pairs without any intron | 3.7% | 1.0% | 5.1% |
| Pairs where only one gene has intron(s) | 7.0% | 19.2% | 36% |
| Pairs with at least one conserved intron position | 71% | 10.6% | 6.1% |
| Conserved intron number/total intron number in A. thaliana | 60.5% | 2.6% | 1.7% |
| Conserved intron number/total intron number in O. sativa | 59.6% | 2.6% | 1.9% |
| Number of not conserved introns in A. thaliana/not conserved introns in O. sativa | 1.03 | 1.02 | 1.12 |
Intron position conservation was tested between 486 U{1:1} gene pairs (pairs in which both genes are supported by full-length transcript), and on random samples of 486 shuffled gene pairs from both species extracted fifty times from U{1:1} genes and from all nuclear genes. Intron position was based on the corresponding protein sequence alignments (ClustalW).