Imprecise excision of a P-element inserted 412bp upstream of the en transcription start site, resulting in deletion of 14.25kb of upstream en sequences and 2.8kb of the en transcription unit, including the first and second exons and the first intron. No P-element sequences remain in this mutant.
Imprecise excision of a P-element inserted 412bp upstream of the en transcription start site, resulting in deletion of 14.25kb of upstream en sequences and 2.8kb of the en transcription unit.