Cuticle preparations of embryos heterozygous with abd-AD24 show transformations of abdominal segments towards an A1 identity. Cuticle preparations of homozygous embryos show transformations towards a T3 identity. UbxJX2/Ubx embryos show a transformation of denticle belts towards T3 and die before hatching, but UbxJX2/Ubxbx-34e animals live to adulthood and show no obvious transformation.