Ser to Phe substitution at amino acid 103, within the amino terminal half.
C17442679T
S103F | dl-PA; S103F | dl-PB; S103F | dl-PC; S103F | dl-PD; S103F | dl-PE; S103F | dl-PF
S103F
Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
Strong dorsalization: loss of ventral epidermis.
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.