The average number of crystal cells per embryo is significantly reduced in homozygous stage 13-14 embryos compared to wild type.
In embryos laid by homozygous mutant mothers no leading edge cells are found.
Moderate ventralised phenotype. Defective movements of the germ band: due to loss of the amnioserosa and because the dorsalmost cells have acquired the lateral fate of the dorsal ectoderm. Dorsal cell fates are deleted and ventrolateral mitotic domains are expanded.
Wright.