FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\fjunspecified
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General Information
Symbol
Dmel\fjunspecified
Species
D. melanogaster
Name
FlyBase ID
FBal0057440
Feature type
allele
Associated gene
Dmel\fj
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Mutagen
    Nature of the Allele
    Allele class
    Mutagen
    Progenitor genotype
    Cytology
    Description

    FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.

    (FlyBase Curators, 2025-)
    Mutations Mapped to the Genome
    Curation Data
    Type
    Location
    Additional Notes
    References
    Variant Molecular Consequences
    Associated Sequence Data
    DDBJ / EMBL / GenBank
    DNA sequence
    Protein sequence
     
    UniProtKB/Swiss-Prot
      UniProtKB/TrEMBL
        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

        Hemizygous males have legs that are 19% shorter than wild-type. Shortening starts at the coxa (10% shorter than normal) and becomes more pronounced distally (except for the trochanter), with the maximum decrease (44%) in the second to third tarsal segments. The two most distal tarsal segments are slightly longer than wild-type. The total length of the wing is reduced by 10%, with maximum shortening (50%) occurring between the anterior and posterior cross veins, while the proximal longitudinal veins are longer or unchanged. The effect on wing width is small. The scutellum is shorter and wider than wild-type. Aristal length is reduced, although the number of aristal branches and length of the basal segment is normal. The third antennal segment has a decreased length and an increased width. The second tergite is reduced in length, other tergites are normal.

        (Tokunaga et al., 1982)
        External Data
        Interactions
        Show genetic interaction network for Enhancers & Suppressors
        Phenotypic Class
        Phenotype Manifest In
        Enhancer of
        Statement
        Reference

        fjunspecified is an enhancer of phenotype of cg1

        (Waddington, 1953)
        Additional Comments
        Genetic Interactions
        Statement
        Reference

        The reversal of cell polarity that is seen in cells anterior to clones in the anterior compartment of the dorsal epidermis of the adult abdomen (in the tergite) where the clones are expressing ftScer\UAS.cMa under the control of Scer\GAL4αTub84B.PL is enhanced if the clones are induced in a fjunspecified background compared to a wild-type background; the repolarisation occurs over a greater range in the fjunspecified background.

        The reversal of cell polarity that is seen in cells posterior to clones in the anterior compartment of the dorsal epidermis of the adult abdomen (in the tergite) where the clones are expressing dsecto.Scer\UAS under the control of Scer\GAL4αTub84B.PL is enhanced if the clones are induced in a fjunspecified background compared to a wild-type background; the repolarisation occurs over a greater range in the fjunspecified background.

        The weak reversal of cell polarity phenotype that is seen in cells posterior to clones in the anterior compartment of the dorsal epidermis of the adult abdomen (in the tergite) where the clones are expressing dsScer\UAS.cTa under the control of Scer\GAL4αTub84B.PL is not enhanced if the clones are induced in a fjunspecified background compared to a wild-type background.

        (Casal et al., 2006)

        fjunspecified/+ enhances the numbers of ommatidial inversions in ds1/dsUAO71 flies.

        (Strutt et al., 2004)
        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
        fjunspecified
        unspecified
        (Tokunaga et al., 1982)
        Name Synonyms
        Secondary FlyBase IDs
          References (5)