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Distance of introns to the 3' end of genes
| Lost introns | Conserved introns | ||||
|---|---|---|---|---|---|
| n | Mean ± SD (kb) | n | Mean ± SD (kb) | Pa | |
| Rats | 86 | 1.11 ± 0.80 | 148,176 | 2.05 ± 1.99 | 8 × 10-9 |
| Mice | 45 | 2.66 ± 1.97 | 148,176 | 2.83 ± 3.14 | 0.414 |
Only the length of exonic sequences was calculated. aMann-Whitney U test was used to calculate the values of P. kb: kilobase; SD: standard deviation.
