Table 1.
Frequency of polyploid cells and anaphase figures in dck mutant brains
| No. of metaphasesa
|
No. of anaphases
|
|||||||
|---|---|---|---|---|---|---|---|---|
| Genotype | No. of cells scored | Diploid | Polyploid | Diploid | Polyploid | Polyploid figures (%) | Anaphases (%) | Mitotic indexb |
| dck1/dck1 | 254 | 81 | 127 | 19 | 27 | 60.6 | 18.1 | 0.68 |
| dck2/dck2 | 273 | 152 | 77 | 38 | 6 | 30.4 | 16.1 | 0.55 |
| dck2/Df(3L)E44 | 373 | 131 | 169 | 42 | 31 | 53.6 | 19.6 | 0.94 |
| dck3/Df(3L)E44 | 385 | 272 | 48 | 55 | 10 | 15.1 | 16.9 | 0.76 |
| Oregon R (control) | 282 | 227 | 0 | 55 | 0 | 0 | 19.5 | 0.70 |
a
This class includes both prometaphases and metaphases
b
The mitotic index corresponds to the average number of divisions per optic field. The optic field used in this analysis is the circular area seen under a phase contrast Neofluar 100× oil-immersion Zeiss objective, by using 10× oculars and the Optovar set at 1.25