Table 1.
General characteristics of macro- and microchromosomes
|
Feature |
Macrochromosomes |
Microchromosomes |
Reference |
|---|---|---|---|
| Cytogenetic band type | G-band | R-band | Ponce de Leon et al. 1992 |
| Gene density (per Mb) | 9.0 to 15.4 | 13.8 to 41.2 | Hillier et al. 2004 |
| Intron length (bp) | 4066 to 5742 | 1867 to 4128 | Hillier et al. 2004 |
| Exon length (bp) | 164 to 171 | 157 to 172 | Hillier et al. 2004 |
| Intergenic gap length (kb) | 18 to 31 | 8 to 24 | Hillier et al. 2004 |
| Intron length/exon length | 24.6 to 34.6 | 11.7 to 23.2 | Hillier et al. 2004 |
| %G + C content | 38.4 to 40.1 | 40.9 to 50.1 | Hillier et al. 2004 |
| CpG island density (per Mb) | 29 to 49 | 73 to 266 | Hillier et al. 2004 |
| LINEs (%) | 6.0 to 11.9 | 2.5 to 10.0 | Hillier et al. 2004 |
| SINEs (%) | ~ none | ~ none | Hillier et al. 2004 |
| Synonymous rate | 0.090 to 0.125 | 0.111 to 0.156 | Axelsson et al. 2005 |
| Nonsynonymous rate | 0.011 to 0.021 | 0.007 to 0.016 | Axelsson et al. 2005 |
| Ka/Ks ratio | 0.128 to 0.360 | 0.066 to 0.177 | Axelsson et al. 2005 |
| GC3% | 49 to 53 | 56 to 65 | Hillier et al. 2004 |
| DNA replication | late | early | Ponce de Leon et al. 1992 |
| Recombination rate (cM/Mb)
|
2.5 to 3.2
|
2.5 to 17.1
|
Hillier et al. 2004
|
