Adh << bk1 << osp << mol << bk2
Breakpoint(s) molecularly mapped
Breakpoint on 2 between 14 and 18 kilobases to the right of the EcoRI restriction site immediately distal to Adh (Chia et al.).
Left limit of break 1 from polytene analysis (FBrf0051930) Right limit of break 1 from complementation mapping against osp (FBrf0087599) 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.
Aberration has no effect on z but has breakpoints within the z critical region.