FB2026_02 , released June 18, 2026
Allele: Dmel\biQd
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General Information
Symbol
Dmel\biQd
Species
D. melanogaster
Name
Quadroon
FlyBase ID
FBal0001121
Feature type
allele
Associated gene
Dmel\bi
Associated Insertion(s)
Carried in Construct
Key Links
Allele class

gain of function allele

Mutagen
Nature of the Allele
Allele class

gain of function allele

(Kopp and Duncan, 1997)
Mutagen
spontaneous
X ray
(Kopp and Duncan, 1997)
Progenitor genotype
Cytology

Polytene chromosomes normal.

(Kopp and Duncan, 1997)
Description
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
M81796
AAA28736
 
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

    The posterior pigment band of each abdominal tergite is expanded anteriorly compared to wild-type in heterozygotes.

    (Kopp and Duncan, 1997)

    biQd/biD4 exhibit homozygous 'Qd' phenotype as well as bi-like phenotype. RK2.

    (Banga et al., 1986)

    Broad dark band on margins of all abdominal tergites, giving abdomen superficial appearance of uniform darkness. Viability of heterozygous female normal, of homozygous female < 10% normal and of male 30% normal.

    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
    Complements

    bi1

    (Banga et al., 1986)
    Comments
    Images (0)
    Mutant
    Wild-type
    Stocks (2)
    Notes on Origin
    Discoverer

    Thompson, Nov. 1958.

    External Crossreferences and Linkouts ( 3 )
    Crossreferences
    GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
    GenBank Protein - A collection of sequences from several sources, including translations from annotated coding regions in GenBank, RefSeq and TPA, as well as records from SwissProt, PIR, PRF, and PDB.
    UniProt/Swiss-Prot - Manually annotated and reviewed records of protein sequence and functional information
    Synonyms and Secondary IDs (5)
    Reported As
    Symbol Synonym
    Qd
    (Tsai et al., 1997, Pflugfelder and Heisenberg, 1995)
    Qd1
    (Kopp and Duncan, 1997)
    biQD
    (Curtis et al., 2013)
    biQd
    Name Synonyms
    Quadroon
    Secondary FlyBase IDs
      References (7)