l(2)37De << bk1 << l(2)37Dg << spir << bk2 << Bl
Breakpoint(s) molecularly mapped
All limits from polytene analysis (FBrf0039473)
Induced on: SD-72.
Induced on: a In(2R)NS, In(2LR)SD72, SD-72 chromosome.
Retains the ability to distort segregation.