2B1;20E-20F
1F4--2A2;[]
2B1--2;[]
2A2-2B1;19F-20A
2A2-2B1;19F5-20A
l(1)2Ae << bk1 << bk2
DNA breakpoint (2B1-2) between coordinates 31.3 and 35.3 (Chao and Guild, 1986, EMBO J. 5: 143-50).
brrbp-4/Df(1)St490 heterozygotes are female sterile, Dp(1;f)101 can restore fertility.
Suppressor effect on In(1)wm4h position-effect variegation phenotype.
l(1)1Fd (Voelker) or su(f). With duplication, both sexes viable and wild type except for presence of occipital bristles.
Dobzhansky, 1930.
deletion of most of X euchromatin
Second breakpoint not reported.
Left limit of break 1 from polytene analysis (FBrf0037773) Right limit of break 1 from polytene analysis (FBrf0048191) Limits of break 2 from polytene analysis (citation unavailable)