Imaginal discs of homozygous larvae are missing or degenerate. Defects in the cell cycle: few or no dividing cells, affects chromosome condensation, arrest of the cell cycle at metaphase and cell division failures that result in highly polyploid cells.
Homozygous larvae die in third instar; discs reported as missing, probably rudimentary (see Szabad and Bryant, 1982). Mitotic chromosomes fuzzy and swollen; 27% of cells polyploid; chromosome breaks observed (Gatti and Baker, 1989).