Segmentation defect results in Bolwig's organ containing up to 60 instead of 12 neurons.
Mutant embryos have abnormal naked cuticle and row-1 and row-2-type ventral denticles.
Ectopic hh expression appears in stage 11 embryos.
Failure of head involution, lack of thoracic belts and square-shaped, mirror symmetrical abdominal belts.
Transformation of cells in the middle section of each segment so that they form pattern elements characteristic of cells at the segment border.
temperature-sensitive homozygous lethal