A 0.4kb genomic fragment from 5' of the ea transcription start site is fused upstream of a ea cDNA in which the pro-domain is deleted and the signal sequence is fused directly to the catalytic domain.
Embryos laid by eaΔN females are weakly ventralised.
Injection of eaΔN RNA into embryos lacking ea causes a lateralised phenotype.
eaΔN, gd7 has embryo phenotype
Embryos laid by females homozygous for gd7 and eaΔN are lateralised.