TABLE 2.
Trl and Psq enhance homeotic phenotypes of PcG mutationsa
| Cross | Genotype | n | Avg no. of legs with sex combs |
|---|---|---|---|
| ph2/ph2; +/+ × +/Y; Trl62/TM3 | ph2/Y; TM3/+ | 89 | 2.15 |
| ph2/Y; Trl62/+ | 76 | 4.33 | |
| ph409/FM7c; +/+ × +/Y; Trl62/TM3 | ph409/Y; TM3/+ | 46 | 4.51 |
| ph409/Y; Trl62/+ | 55 | 5.43 | |
| ph2/ph2; +/+ x +/Y; psqlola/CyO | ph2/Y;/CyO/+ | 53 | 2.46 |
| ph2/Y; psqlola/+ | 44 | 4.02 | |
| ph2/ph2; +/+ x +/Y; psq2403/CyO | ph2/Y; CyO/+ | 84 | 2.48 |
| ph2/Y; psq2403/+ | 68 | 5.03 | |
| psqlola/CyO; +/+ × +/+; Pc4/Tm6B | CyO/+; Pc4/+ | 48 | 2.23 |
| psqlola/+; TM6B4/+ | 52 | 2.0 | |
| psqlola/+; Pc4/+ | 50 | 4.04 | |
| psq2403/CyO; +/+ × +/+; Pc4/TM6B | CyO/+; Pc4/+ | 58 | 3.77 |
| psq2403/+; TM6B/+ | 57 | 2.0 | |
| psq2403/+; Pc4/+ | 58 | 5.22 |
a
Male progeny of the indicated crossed were scored for the number of legs with extra sex comb teeth. Wild-type males have sex combs on the prothoracic legs only, and hence have 2.0 legs with sex combs. A fly with sex combs on prothoracic, mesothoracic, and metathoracic legs would have 6.0 legs with sex combs. The numbers of sex combs present on individual flies were determined by observation under a dissecting microscope, and the results are expressed as the average number of legs with sex combs found in the files scored. All values are statistically significant at P < 0.05, using a chi-squared test.