bk1 hits elB << bk2
Limits of break 1 from complementation mapping against elB (FBrf0051916) Limits of break 2 from polytene analysis (FBrf0051930)
Chromosome has no effect on the physical interaction between tandemly duplicated copies of w+ and z1, despite having breakpoints within the critical region.
Angel, 2nd June 1982.
Aberration has no effect on z but has breakpoints within the z critical region.