Su(H) << bk1 << ck << lace << bk2 << CycE
Df(2L)TE35BC-3 embryos show defective neuroblast asymmetry. Neuroblast spindles are misoriented as compared to wild-type, occasionally they are completely reversed.
Homozygous embryos fail to form a ventral furrow. Cephalic furrow formation, invagination of the endoderm and germ band elongation do take place in these embryos.