| Approximate proportions (%) | |||||
---|---|---|---|---|---|---|
 | Tandem |  | DNA | Predicted | Predicted |  |
Region | repeats* | Retroelements | transposons | genes | pseudogenes | [Ref] |
Arabidopsis | Â | Â | Â | Â | Â | Â |
183 kb central | 25 | 30 | 15 | [0 to 4]†| [4] | |
hk4S knob | Â | Â | Â | Â | Â | Â |
Arabidopsis | Â | Â | Â | Â | Â | Â |
520 kb hk4S | 10 | 30 | 10 | [1 to 25]†| [4] | |
knob | Â | Â | Â | Â | Â | Â |
Arabidopsis | 0 to 4 | 0 to 4 | 0 to 4 | 45 to 75 | 0 to 1 | [5] |
genic | Â | Â | Â | Â | Â | Â |
Arabidopsis | Â | Â | Â | Â | Â | Â |
'centromeric' | 0 to >50 | 0 to 50 | 0 to 30 | 0 to 20 | 0 to 4 | [5] |
(II and IV)‡ |  |  |  |  |  |  |
Arabidopsis | Â | Â | Â | Â | Â | Â |
pericentromeric | 0 to 8 | 0 to 65 | 0 to 8 | 0 to 25 | 0 to 6 | [5] |
(II and IV) | Â | Â | Â | Â | Â | Â |
Rice genic | Â | Â | Â | Â | Â | Â |
(Adh 1/Adh 2) | 0 | 14 | 14 | 26 | 4 | [20] |
Maize genic | Â | Â | Â | Â | Â | Â |
(adh 1) | 0 | 77 | 5 | 10 to 12 | 2 | [12] |
Maize 9S knob | 70 | 30 | 0 | 0 | 0 | [9] |