Insertion lies within a 4kb region that represents a hot spot for P-element insertions and maps ~20kb upstream from the Class I cDNA which includes the spen ORF, and immediately upstream of (and slightly overlaps) the j1 cDNA that likely corresponds to the spen 5' UTR.
Complements: l(2)04207a04207a. Complements: kis07812. Complements: Rpp30k01901.