noc << bk1 << sna << CycE << bk2
Breakpoint(s) molecularly mapped
Left break mapped to the DNA (McGill, Chia, Karp and Ashburner, 1988, Genetics 119: 647-61).
Most individuals die as pharate adults, the few adult escapers have a snaSco bristle phenotype.
Almost lethal when homozygous, most dying as pharate adults; escapers Sco.