Table 1 Statistics of B. rapa chromosome A3
| Â | B. rapachromosome A3 | A. thalianawhole genome |
|---|---|---|
Total number of BACs | 348 | 1,633 |
Approximate chromosome length (Mb) | 34.2 | 134.6 |
Total non-overlapping sequence (Mb) | 31.9 | 119.1 |
G/C content (%) | Â | Â |
   Overall | 33.8 | 35.9 |
   Exons | 46.4 | 44.1 |
   Introns | 32.4 | 32.6 |
   Intergenic regions | 29.6 | 32.9 |
Number of protein coding genes | 7,058 | 27,379 |
   Number of exons per gene | 4.7 | 5.7 |
   Intron size (bp) | 170 | 165 |
   Exon size (bp) | 222 | 304 |
Average gene size (bp) | 1,755 | 2,467 |
Average gene density (bp/gene) | 4,633 | 4,351 |
Alternatively spliced genes | 184 | 4,626 |
Known genes | 5,825 | 21,498 |
   Average known gene size (bp) | 1,231 | 2,384 |
Unknown genes | 1,415 | 5,784 |
   Average unknown gene size (bp) | 547 | 1,489 |
Hypothetical genes | 2 | 97 |
   Average hypothetical gene size (bp) | 1,681 | 686 |
tRNA genes | 164 | 689 |
miRNA genes | 26 | 215 |
Transposons (%) | 5 | 13 |