FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Delta3
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General Information
Symbol
Dmel\Delta3
Species
D. melanogaster
Name
FlyBase ID
FBal0002460
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
Dl3
Key Links
Mutagen
Nature of the Allele
Progenitor genotype
Cytology
Description
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
Reference
 
Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 0 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 0 )
Disease
Interaction
References
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

About 25% of Dl3 heterozygote adults display vein thickening phenotype.

Heterozygous flies show a mild vein thickening along the length and at the distal tip of wing vein L2, bifurcation of the posterior crossvein at its junction with vein L5, thickening of vein L5 at the distal tip and a thickening of vein L4 at its junction with the anterior crossvein.

The RP2 motoneuron duplicated at the expense of the RP2sib. The aCC motoneuron is duplicated at the expense of the pCC interneuron. The Usib fates are duplicated at the expense of the U neurons. The dMP2 is duplicated at the expense of the vMP2. No change was observable in EL cell fate. This phenotype is the reciprocal of that shown for numb mutants. Mutant embryos show excess neuroblast formation characteristic of neurogenic mutants.

Assymetric division of all the MP2 precursors formed is not altered, but the smaller vMP2 is transformed to the dMP2 fate. In numb1 Dl3 double mutants all MP2 neurons develop as dMP2.

Individuals heterozygous for Bpt1 and heterozygous for Dl3 exhibit no Bpt1 phenotype.

Lethal or semi-lethal when in combination with large deficiency alleles of E(spl) or Df(3R)Espl3. suppressor Extragenic suppressor of the Nspl-1-E(spl)1 interaction.

Dl3 shows similar although less severe phenotypes to Dl1. In contrast to Dl1, Dl3 shows a thickening at the crossveins.

Like Dl1 but deltas at margin are slight; longitudinal veins between anterior and posterior crossveins and crossveins themselves are thickened. Spreading of wing slighter than in Dl1. Better viability than Dl1. homozygous lethal. RK1.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhanced by
Statement
Reference

Delta3 has visible | adult stage phenotype, enhanceable by Lrrk[+]/Lrrke03680

Delta3 has visible | adult stage phenotype, enhanceable by Neurl4[+]/Neurl447b-2

Delta3 has visible | dominant phenotype, enhanceable by lqf[+]/lqfARI

Enhancer of
Statement
Reference

Delta3 is an enhancer of visible phenotype of Myt1GMR.PP

Suppressor of
Statement
Reference

Delta3 is a suppressor of visible phenotype of upd1GMR.PB

Other
Statement
Reference
Phenotype Manifest In
Enhanced by
Statement
Reference

Delta3 has wing vein | adult stage phenotype, enhanceable by Neurl4[+]/Neurl447b-2

Delta3 has wing vein | adult stage phenotype, enhanceable by Lrrk[+]/Lrrke03680

Delta3 has posterior crossvein phenotype, enhanceable by lqf[+]/lqfARI

Delta3 has wing vein L2 | distal phenotype, enhanceable by lqf[+]/lqfARI

Delta3 has wing vein L2 phenotype, enhanceable by lqf[+]/lqfARI

Delta3 has wing vein L4 phenotype, enhanceable by lqf[+]/lqfARI

Delta3 has wing vein L5 | distal phenotype, enhanceable by lqf[+]/lqfARI

Suppressed by
Statement
Reference

Delta3 has phenotype, suppressible by S1

NOT suppressed by
Statement
Reference

Delta3 has phenotype, non-suppressible by Dp(2;3)P

Enhancer of
Statement
Reference

Delta3 is an enhancer of eye phenotype of Myt1GMR.PP

Suppressor of
Statement
Reference

Delta3 is a suppressor of eye phenotype of upd1GMR.PB

Other
Statement
Reference

Delta3, stl[+]/stl4 has ovariole phenotype

Additional Comments
Genetic Interactions
Statement
Reference

The frequency of the vein thickening phenotype observed in Dl3 heterozygote adults is significantly increased by combination with a single copy of either Lrrke03680 or Neurl447b-2.

96.1% of stl4/+ ; Dl3/+ ovarioles have compound or morphologically disrupted follicles.

Heterozygosity for Dl3 increases the frequency of lqfARI embryos that show an excess cardioblast phenotype at 18oC. lqfARI dominantly enhances the expressivity and penetrance of all Dl3/+ wing vein phenotypes.

The confluens phenotype of Dl3 is suppressed by sno71e3.

Dl3 is viable in double heterozygous combination with RpS31, M(2)31A1 or M(3)99E1.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (2)
Notes on Origin
Discoverer

Bridges, 10th Dec. 1924.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (23)