bk1 << oop << bk2 << nob
Homozygous embryos have normal gut morphology.
Heterozygous adults have a central brain phenotype; the β lobes are fused but the ellipsoid body appears normal.
Deficient embryos show an uninterpretable mutant midgut phenotype.
Homozygous embryos are very abnormal compared to wild-type. Malpighian tubules are not completely elongated and vary in diameter along their length.
Heterozygosity for this deletion enhances the mutant ovarian phenotype of ovoD2.
Hemizygous embryos were examined with polarised light microscopy and antibody staining: muscle pattern grossly deranged.