33B3;34A1-34A2
33B3-33B7;34A1-34A2
33B2-33B3;34A1-34A2
esc << bk1 << E(var)33AD << pdm2 << bk2
Breakpoint(s) molecularly mapped
Distal breakpoint mapped to the DNA (Frei et al., 1985).
Df(2L)esc10 is semi-lethal in combination with Df(2L)prd1.7. Surviving males and females are fertile.
Df(2L)esc10/Df(2L)prd1.7 adult survivors lack almost all interommatidial bristles.
No effect on In(1)wm4h position-effect variegation.
Heterozygous Df(2L)prd1.7 larvae show a reduction in food ingestion rate of about 35% compared to wild-type larvae. Waste excretion rates of heterozygous Df(2L)prd1.7 larvae are reduced compared to wild type.
The Df(2L)prd1.7 chromosome does not act as a dominant 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).
Df(2L)prd1.7 in combination with a pair of introgressions from D.simulans spanning 30F1-31E7 to 35D7-36A14 Dsim\Int(2L)S and 21A1 to 22D1--23A2 Dsim\Int(2L)D produces sterile male flies. These flies are female sterile.
Does not cause unconditional lethality in hybrid females when heterozygous with D.simulans chromosome.
No second site non-complementing phenotype with zipEbr and zipmhc-c6.1.
Shows no maternal enhancement of dpphr4.
100% of homozygotes lack cells from the RP2/sib lineage in all remaining hemisegments. Heterozygotes show a weak haploinsufficient phenotype, with approximately 6.5% of embryos having an RP2 lineage defect. All Df(2L)prd1.7/Df(2L)Prl embryos have hemisegments which show RP2/sib lineage defects.
Deficient embryos show an uninterpretable mutant midgut phenotype.
Homozygous embryos do not complete head involution and tracheae are disconnected. The midgut does not constrict and the midgut epithelium shows variable degrees of degeneration.
Heterozygosity for this deletion has no effect on the mutant ovarian phenotype of ovoD2.
eve-positive RP2/sib GMCs are not observed in 7.5hr deficiency embryos.
prd4/Df(2L)prd1.7 transheterozygotes only survive to adulthood in the presence of a copy of P{prd-SN20}. These adults give rise to fertile offspring.
Nusslein-Volhard.
Ref: Lindsley and Zimm, 1992
Left limit of break 1 from polytene analysis (FBrf0049878) Right limit of break 1 from polytene analysis (FBrf0076124) Limits of break 2 from polytene analysis (FBrf0049878)