Deficiency breakpoint within the Scr transcription unit. The deficiency removes a 3' portion of the Scr transcription unit, leaving the 5' portion and promoter sequences intact.
visible (with ScrWrv4)
visible | dominant
sex comb
sex comb (with ScrWrv4)
Heterozygous males have a reduced number of sex comb teeth (4-6) on the first leg. ScrWIN11/ScrWrv4 males have no sex comb teeth on the first leg.