Table 2.
Characterisation of gene subsets with differing intron/exon numbers and intron length, in terms of evolutionary rate and gene expression. Spearman correlation coefficient (= 0.58, P < 2.0 × 10−16) was calculated for gene subgroups greater than 2SD (intron length/number and intron number/length) from the mean.
| Short and higher intron | Long and higher intron | P-value† | |||
|---|---|---|---|---|---|
| length/number | number/length | ||||
| Mean | Median | Mean | Median | ||
| Ka/Ks | 0.19 | 0.17 | 0.054 | 0.080 | <2 × 10−16 |
| Breadth | 10.27 | 9 | 23 | 11.52 | 0.019 |
| SAGE | 114.44 | 34.66 | 30.05 | 39.91 | 0.021 |
† P-value of nonparametric Mann-Whitney test.