Gln to stop codon substitution at amino acid 598, within the carboxy terminal group.
C17437293T
Q597term | dl-PA; Q597term | dl-PB; Q597term | dl-PD; Q597term | dl-PE
Q598term
Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
Weak dorsalization: deletion of mesoderm but some ventral and lateral epidermis forms.
Eggs derived from homozygous females cellularise normally but become abnormal at gastrulation. The embryos are incompletely dorsalised; a tube of dorsal cuticle is formed. The embryos usually form some Filzkorper material and a small piece of head skeleton.