4. Linkage data from a 3 point F2 test :-
| Genetic constitution | Pr | pr | Total | |||||||
| Bt | bt | Bt | bt | |||||||
| + | vp2 | + | vp2 | + | vp2 | + | vp2 | |||
| Pr + vp2 | ⊗ | 431 | 207 | 53 | 1* | 84 | 14 | 200 | 1* | 991 |
| pr bt + | ||||||||||
* Not certain that these are vp2 grains. The recombination percentages are calculated as though these were vp2.
pr - vp2 = 23%
bt - vp2 = 10%
pr - bt = 15%