Imprecise excision of the P{GawB} element. Scer\GAL4 sequences are still present but are altered compared with prosV1. w sequences are not detected. A 2.9kb BamHI-PstI fragment ("pBSK") from the 3' end of the element appears to be intact. Surrounding genomic sequences are unaffected.
The courtship index of heterozygous males towards decapitated Canton-S males is not significantly different from that of wild-type males towards decapitated Canton-S males.