FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\vnc14
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General Information
Symbol
Dmel\vnc14
Species
D. melanogaster
Name
FlyBase ID
FBal0118028
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Mutagen
Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

Insertion of a 5.2kb copia element in the predicted intron of vnc.

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 and vnc14/vncBDk females produce fewer eggs than wild type, the majority of which are shortened along the anterior/posterior axis and collapsed. Eggs laid by mutant females often have defects in the shape or position of the dorsal appendages (24.6% for homozygous females and 28.2% for vnc14/vncBDk females), such as appendages that are closely apposed or fused. Many egg chambers that appear to be at stage 11 or older based on follicle cell morphology contain unusually small oocytes and persistent nurse cells, phenotypes typically resulting from a failure of nurse cells to dump their contents into the oocyte (44.4% for homozygous females and 38.5% for vnc14/vncBDk females). 50% of homozygous egg chambers contain abnormal numbers of germline cells, showing both defects in cystocyte division (both too many and too few division) and in cyst encapsulation. 13.3% of vnc14/vncBDk egg chambers contain abnormal numbers of germline cells showing both defects in cystocyte division and in cyst encapsulation. Fusome defects are seen in 46.7% of homozygous and 28.3% of vnc14/vncBDk germaria. Chromatin reorganisation in the nurse cell nuclei is disrupted in mutant egg chambers, with many of the nurse cells beyond stage 5 retaining the condensed "five-blob" configuration of chromatin (70.3% of homozygous nurse cells, 72.8% of vnc14/vncBDk nurse cells) in contrast to wild-type nurse cells at this stage (3.2%).

Hemizygous vnc14/Df(3L)AC1 females produce no eggs. Homozygous vnc14 females produce a few flaccid eggs with abnormal chorions (abnormal numbers of chorionic filaments and thin chorionic membranes). vnc2/vnc14 heterozygotes do produce eggs. Hemizygous vnc14/Df(3L)AC1 ovaries are small and comprised of tumorous egg chambers. Nuclei within these egg chambers appear undifferentiated. Homozygous vnc14 egg chambers range from too few through normal numbers to too many nurse cells.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Fails to complement
Rescued by
Comments
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
Comments
Comments

vnc14 slightly weaker phenotype than vnc2.

vnc2 and vnc14 contain a copia insertion in an identical location.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (1)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (2)