Table 5.
Interfocus Distances for Bivalents of Each Chromosome Pair with Different Numbers of Foci
|
Mean ± SD Interfocus Distancea for Interfocus Interval(% of Chromosome Arm) |
|||||
| No. of Foci | 1–2 | 2–3 | 3–4 | 4–5 | No. ofBivalents |
| Chromosome 21: | |||||
| 2 | 44.1 ± 10.3 | … | … | … | 23 |
| Chromosome 18: | |||||
| 2 | 57.8 ± 11.1 | … | … | … | 35 |
| 3 | 33.9 ± 12.0 | 39.9 ± 11.4 |
… | … | 24 |
| 4 | 21.2 ± 11.5 | 29.4 ± 9.5 | 28.3 ± 5.2 |
… | 3 |
| Chromosome 13: | |||||
| 2 | 48.1 ± 10.9 | … | … | … | 31 |
| 3 | 33.7 ± 11.5 | 32.7 ± 12.2 | … | … | 28 |
| 4 | 24.7 ± 6.1 | 31.9 ± 9.0 | 18.4 ± 4.8 | … | 3 |
| Chromosome X: | |||||
| 2 | 68.0 ± 11.7 |
… | … | … | 6 |
| 3 | 37.2 ± 12.0 | 34.3 ± 15.0 | … | … | 9 |
| 4 | 25.1 ± 4.7 | 35.0 ± 7.5 | 21.3 ± 9.9 | … | 5 |
| 5 | 15.7 ± 3.9 | 15.3 ± 3.3 | 41.6 ± 4.0 |
15.1 ± 4.4 | 3 |
a
Measured (in pixels) from the q-arm telomere by tracing along the axes, with the IPLab software. The transcentromere distance is underlined; intervals with a mixture of intra- and interarm distances are boldface italic. Foci are numbered from the q-arm telomere, across the centromere, to the p-arm telomere.