embryonic neuroblast & abdominal segment
Germ cells are able to move through the posterior midgut and initially find lateral mesoderm. The germ cells fail to maintain their specific association with the mesoderm and disperse in the posterior of the embryo. Gonadal mesoderm fails to develop.
Extra lateral neuroblasts incorporate BrdU in abdominal segments in homozygous embryos compared to wild-type.
Scrunspecified, Antpunspecified, Ubxunspecified, abd-Aunspecified, Abd-Bunspecified mutants are profoundly affected in their development with abnormal or twisted dorsal closure.
3 mutants are isolated.