47E3;48A5-48B2
47E3-47E6;48A4
47E3-47E6;48A4-48B2
Jra << bk1 << sha << Su(var)47E48A << bk2 << obk
Suppressor of In(1)wm4h position-effect variegation.
Dominantly causes tergite defects in less than 50% of run3 heterozygotes.
Hemizygotes with ix4 are female fertile at 18oC and display pronounced temperature-sensitive intersexuality at 25oC or 29oC.
Homozygous embryos are very abnormal compared to wild-type.
Heterozygosity for this deletion has no effect on the mutant ovarian phenotype of ovoD2.
Unsegmented ventral cord.
Does not interact with RpII140wimp maternal effect.
Ashburner.
The Df(2R)en-B chromosome acts as a dominant weak suppressor of telomeric silencing (assayed using the effect of the chromosome on the eye colour phenotype of flies carrying "P{wvar}KR3-2", a stable "brown-red" variant of the P{3'WP-2,wvar}2Lt insertion), but this is a false positive result (the suppressor is not within the bounds of the deficient region) because the suppressor maps to the tip of 2L rather than to the site of the deficiency. In addition, the 2L TAS array on the chromosome is reduced (as assayed by in situ hybridization) and it has previously been shown (FBrf0137248, FBrf0158986) that partial or complete deficiency of the 2L TAS array on the homologue suppresses silencing of brown-red variants of P{3'WP-2,wvar}2Lt.
Ref: Lindsley and Zimm, 1992
Limits of break 1 from polytene analysis (FBrf0036848) Left limit of break 2 from inclusion of qvr (FBrf0089694) Right limit of break 2 from polytene analysis (FBrf0054158)