5. Four-point test, group 7.
| T3-7a + + + | ||||||||
| + ra1 gl1 ij | ||||||||
| 0 | 1 | 2 | 3 | 1-2 | 1-3 | 2-3 | 1-2-3 | |
| 210 222 | 2 16 | 5 17 | 25 40 | 0 0 | 1 0 | 1 0 | 0 0 | |
| 432 | 18 | 22 | 65 | 0 | 1 | 1 | 0 | = 539 |
| 3.3% | 4.1% | 12.1% | 0.2% | 0.2% | ||||
T-ra1 3.5%, ra1-gl1 4.3%, gl1-ij 12.4%
Normal and semisterile (T) plants considered separately:
| Normal | T-ra1 | 5.4%, | ra1-gl1 | 5.8%, | gl1-ij | 13.6% |
| Semisterile | " | 1.2%, | " | 2.5%, | " | 11.1% |
The large difference in per cent of crossing over in the two cases is unexplained.