In embryos derived from homozygous cact loss-of-function mutant females an expansion of ventral cell fates at the expense of dorsal fates is seen. Amnioserosa and dorsal ectoderm are not specified. Leading edge cells are also missing.
The number of cells in division in the lymph glands of homozygous third instar larvae is higher than in wild-type larvae. The number of dividing hemocytes in the hemolymph of homozygous larvae is significantly higher than in wild-type.
Embryos derived from homozygous females are ventralised, with the dorsal cuticle reduced or absent, and denticle bands expanded dorsally. Haploinsufficiency causes weak ventralisation.
cactunspecified is rescued by cactΔPEST.cBa