TABLE 1.
Genetic interaction between psq and Pc
| Expta | psq allele | Avg no. of ectopic sex comb teeth/leg for genotypeb:
|
|
|---|---|---|---|
| Bal Pc | psq Pc | ||
| A | 0115 | 4.08 (118) | 10.13 (167) |
| 2403 | 3.44 (148) | 8.58 (184) | |
| 8109 | 3.31 (140) | 10.02 (131) | |
| F112 | 3.67 (168) | 5.17 (216) | |
| E34 | 3.86 (175) | 4.41 (216) | |
| E39 | 3.44 (126) | 3.81 (108) | |
| B | 0115 | 3.77 (102) | 7.51 (135) |
| Δ18 | 2.52 (84) | 8.90 (132) | |
| 8109 | 3.00 (66) | 8.78 (136) | |
Virgin females of various psq mutant alleles were crossed with Pc4 mutant males. Two separate experiments were done to determine the allelic strength in interactions with the Pc4 mutation.
The average number of ectopic sex comb teeth per leg was calculated by dividing the total number of ectopic sex comb teeth by the number of second and third legs (values in parentheses) for each genotype. The number of sex comb teeth on the first leg of wild-type males usually varies between 10 and 12. A reciprocal cross between Pc4 females and psq2403 males gave a lower number (1.31) of ectopic sex comb teeth in Pc4 progeny but a similar number (8.30 versus 8.58) in double-mutant progeny, indicating a strong maternal effect of psq.