Sxlf7,M1/SxlM1,fΔ33 females display masculinized external and internal somatic morphology and body size. The only hints of somatic femininity are a few small sixth-sternite bristles and about 25% fewer sexcomb teeth than seen in true males.
SxlM1,fΔ33 suppresses the dominant male-specific lethality of SxlM1.
SxlM1,fΔ33 supports wild-type oogenesis in homozygous mutant germline clones.
Sxlf7,M1 and SxlM1,fΔ33 fail to complement for female viability if exosed to 18[o]C during early embryogenesis or if exposed to 30[o] during the pupal period.