Table 2 . A telomeric P-lacZ locus can repress two PBoL transgenes inserted at allelic or nonallelic positions.
| Row | Parental Cross | Genotype of G1 Females Analyzed | % TSE | n |
|---|---|---|---|---|
| 1 | ♀ m2a x ♂ m2a | + / + ; m2a / m2a ; + / + | 0.0 | 381 |
| 2 | ♀ m2a x ♂ w1a | + / + ; m2a / w1a ; + / + | 0.0 | 844 |
| 3 | ♀ m2a x ♂ A7.6B | + / + ; m2a / + ; + / A7.6B | 0.0 | 316 |
| 4 | ♀ P-1152 ; m2a x ♂ P-1152 ; m2a | P-1152 / P-1152 ; m2a / m2a ; + / + | 95.8 | 406 |
| 5 | ♀ P-1152 ; m2a x ♂ w1118 | P-1152 / + ; m2a / + ; + / + | 84.2 | 310 |
| 6 | ♀ P-1152 ; m2a x ♂ m2a | P-1152 / + ; m2a / m2a ; + / + | 87.3 | 512 |
| 7 | ♀ P-1152 ; m2a x ♂ w1a | P-1152 / + ; m2a / w1a ; + / + | 90.2 | 877 |
| 8 | ♀ P-1152 ; m2a x ♂ A7.6B | P-1152 / + ; m2a / + ; + / A7.6B | 97.4 | 381 |
The parental crosses shown in column 2 were performed in order to generate G1 females whose genotype is given in column 3. In each case, G0 females carrying P-1152 were homozygous for this locus. LacZ staining of G1 female ovaries was performed and TSE was measured. Columns 4 and 5 give the TSE percentage and the total number of egg chambers counted, respectively.