bk1 hits osp << bk2
Breakpoint(s) molecularly mapped
Position of distal breakpoint localized to a 2.4 kilobase fragment close to the origin of a 165 kb walk.
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 (FBrf0043115)
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.