↵* % Viability=[# straight wing adults÷(# curly wing adults+# straight wing adults)÷0.33]×100; n, number of progeny counted. Unless otherwise specified, alleles were balanced with CyO dfd-YFP w⁻ (Le et al., 2006); bold text, viability >5%; remainder, viability<5%.

↵† Crosses were set up using females of the column genotype and males of the row genotype.

↵‡ The genotype of the female balancer chromosome is indicated. w⁻, CyO dfd-YFP w⁻; w⁺, CyO dfd-YFP w⁺.

↵§ vari^F033 is considered a null allele despite having a very low percentage of viable progeny when crossed to vari^38EFa2 because vari³²⁷ and vari^R3, which might otherwise be considered null because of their complete lethality in trans to vari^38EFa2, occasionally cause somewhat more severe phenotypes than Df(2L)TW2 and thus may be slightly antimorphic. In addition, Df(2L)TW2 is unhealthy as a heterozygote in trans to WT, which is likely to mask any minimal viability of the vari^38EFa2/null phenotype.