FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Fs(3)Apc1
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General Information
Symbol
Dmel\Fs(3)Apc1
Species
D. melanogaster
Name
FlyBase ID
FBal0004733
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Nature of the Allele
Allele class
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

Heterozygous females lay eggs that are abnormal in structure and lack dorsal appendages. Generation of wild type clones of follicle cells by X irradiation of females at the third instar phase rescues the mutant phenotype efficiently, up to 80% females lay normal eggs that undergo proper embryonic development.

Female viability and male fertility are not reduced. Anterior egg coverings are incompletely formed leading to leakage of egg cytoplasm followed by degeneration of egg primordia and formation of flaccid eggs with rudimentry chorionic appendages.

dominant female-sterile. Majority of eggs produced by Fs(3)Apc/+ females collapse; 1-5% not flaccid. Respiratory appendages of chorion rudimentary as in the anterior chorion. When fertilized, resulting embryos rarely develop cuticular derivatives. Follicle cells in ovarioles fail to migrate between the oocyte and nurse cells. Mutant does not successfully revert. Germ-line chimaeras demonstrate that Fs(3)Apc is follicle-cell autonomous.

External Data
Interactions
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Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

Females resulting from Atg1Δ3D/Fs(3)Apc irradiated larvae containing homozygous Atg1Δ3D follicle cell clones deposit non-typical Fs(3)Apc eggs that are non-flaccid, but contain short and rudimentary dorsal appendages. Embryonic cuticles do not appear in these eggs and no larvae hatch.

Female sterile phenotype cannot be rescued by germ line clones of rho or argos.

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 (3)
Reported As
Symbol Synonym
Fs(3)Apc1
Name Synonyms
Secondary FlyBase IDs
    References (3)