FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\bab2E4
Open Close
General Information
Symbol
Dmel\bab2E4
Species
D. melanogaster
Name
FlyBase ID
FBal0138342
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
babE4
Key Links
Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Mutation results in a truncated bab2 protein being produced.

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

Homozygous females have an intermediate mutant ovary phenotype; the females are semi-sterile to sterile and ovaries have an irregular shape and are substantially smaller than normal. The ovaries contains a reduced number of ovarioles that are abnormally oriented. Homozygotes have an intermediate mutant leg phenotype.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

bab2E4/Df(3L)babAr07 flies have ectopic sex combs on tarsal segment 2 (7-8 bristles) and tarsal segment 3 (3-4 bristles) and show fusion of tarsal segments 4 and 5. Expression of bab1Scer\UAS.cGa under the control of Scer\GAL4bab1-Pgal4-2 partially rescues the mutant leg phenotypes of bab2E4/Df(3L)babAr07 flies; there is no sex comb on tarsal segment 3, tarsal segments 4 and 5 are separated by a well-defined joint but there is a small sex comb on tarsal segment 2 (1-2 bristles). Expression of bab24.Scer\UAS under the control of Scer\GAL4bab1-Pgal4-2 fully rescues the mutant leg phenotypes of bab2E4/Df(3L)babAr07 flies; tarsal segments 2 and 3 do not have any sex combs and tarsal segments 4 and 5 are always properly separated. bab2E4/Df(3L)babAr07 females have ovaries of reduced size which contain only a few follicles with abnormal orientation. They are subfertile and lay very few eggs. These defects are partially rescued by bab1Scer\UAS.cGa expressed under the control of Scer\GAL4bab1-Pgal4-2 and are fully rescued by bab24.Scer\UAS expressed under the control of Scer\GAL4bab1-Pgal4-2. bab2E4/Df(3L)babAr07 females show increased abdominal pigmentation; segments A5 and A6 are fully pigmented. This defect is not rescued by bab24.Scer\UAS expressed under the control of Scer\GAL4bab1-Pgal4-2.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (2)