| Highly expressed genes1 | Secondary cell-wall formation and nitrogen metabolism genes2 | ||||
---|---|---|---|---|---|---|
 | Exon number | Exon length | Standard deviation | Exon number | Exon length | Standard deviation |
Arabidopsis thaliana | 5.9 | 220.8 | 215.0 | 9.1 | 228.9 | 189.8 |
Populus trichocarpa | 6.2 | 241.5 | 253.3 | 9.4 | 261.1 | 263.5 |
Zea mays | 6.1 | 244.5 | 236.7 | 9.0 | 257.6 | 274.8 |
Picea glauca | 6.2 | 236.5 | 226.0 | 9.5 | 223.9 | 217.8 |