FB2026_02 , released June 18, 2026
Allele: Dmel\dsx9
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General Information
Symbol
Dmel\dsx9
Species
D. melanogaster
Name
FlyBase ID
FBal0003162
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Mutagen
    Nature of the Allele
    Allele class
    Mutagen
    Progenitor genotype
    Cytology
    Description

    Deletion beginning at amino acid 65 and extending towards the C terminal of the protein.

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

    ix; dsx transheterozygous progeny from ix3/+; dsx1/+ females crossed to Df(2R)en-B/+; dsx9/+

    males

    show little or no masculinisation of females, or feminisation of males,

    as judged by: Mean number of vaginal teeth; percentage of females with

    fused dorsal-lateral anal plates; percentage width of the 6th tergite

    that is darkly pigmented; number of bristles in the last transverse

    row in the foreleg basitarsus (note this row forms the sex comb in

    males); or number of bristles on the sixth sternite.

    ix3/Df(2R)en-B; dsx9/dsx1 double mutants show masculinisation

    of females, as judged by the following criteria:

    The mean number of vaginal teeth is reduced to 6.45 +/- 2.11. 85 %

    of females have fused dorsal-lateral anal plates (as wild type; note

    that even those with fused plates exhibit variable degrees of partial

    fusion as judged against fusion in wild-type females). The mean percentage

    width of the 6th tergite that is darkly pigmented is increased to 95%

    (+/- 0.4%). The number of bristles in the last transverse row in the

    foreleg basitarsus is increased to: 7.25 +/- 0.54 ( this row forms

    the sex comb in males).

    ix3/Df(2R)en-B; dsx9/dsx1 double mutant females do not

    show significant reductions in the number of bristles on the sixth

    sternite (20.75 +/- 1.83).

    ix3/Df(2R)en-B; dsx9/dsx1 double mutants show feminisation

    of males, as judged by the following criteria:

    An average of 6.85 (+/- 2.74) ectopic vaginal teeth form.

    Fusion of dorso-lateral anal plates is seen in 80% of males.

    The number of bristles in the last transverse row in the foreleg basitarsus

    is decreased to 7.25 +/-0.54 (this row forms the sex comb in males).

    The average number of bristles on the sixth sternite increases dramatically

    from near zero to 18.2 +/- 1.58.

    ix3/Df(2R)en-B; dsx9/dsx1 double mutant males do not

    show significant masculinisation of pigmentation of the 6th tergite,

    which remains

    96% (+/-3%) darkly pigmented.

    ix3/Df(2R)en-B mutant females heterozygous for dsx9 or dsx1

    show masculinisation, as judged by the following criteria:

    Mean number of vaginal teeth is reduced to 9.7 +/- 5.29. 90 % of females

    have fused dorsal-lateral anal plates (as wild type; note that even

    those with fused plates exhibit variable degrees of partial fusion

    as judged against fusion in wild-type females). The mean percentage

    width of the 6th tergite that is darkly pigmented is increased to 92%

    (+/-6%). The number of bristles in the last transverse row in the foreleg

    basitarsus is increased to: 6.88 +/- 0.65 (this row forms the sex comb

    in males).

    ix3/Df(2R)en-B mutant females transheterozygous for dsx9/+

    or dsx1/+ do not show significant reductions in the number of bristles

    on the sixth sternite (21.1 +/-1.68)

    ix3/Df(2R)en-B mutant males heterozygous for dsx9 or dsx1

    do not show feminisation, as judged by the following criteria:

    Mean number of vaginal teeth; percentage of males with fused dorsal-lateral

    anal plates; percentage width of the 6th tergite that is darkly pigmented;

    number of bristles in the last transverse row in the foreleg basitarsus

    (note this row forms the sex comb in males); or number of bristles

    on the sixth sternite.

    dsx9/dsx1 mutant females heterozygous for ix3 or Df(2R)en-B

    show masculinisation, as judged by the following criteria:

    Mean number of vaginal teeth is reduced to 6.0 +/-3.55. 65 % of females

    have fused dorsal-lateral anal plates (as wild type; note that even

    those with fused plates exhibit variable degrees of partial fusion

    as judged against fusion in wild-type females). The mean percentage

    width of the 6th tergite that is darkly pigmented is increased to 96%

    (+/-5%). The number of bristles in the last transverse row in the foreleg

    basitarsus is increased to: 7.75 +/- 0.78 (this row forms the sex comb

    in males). The average number of bristles on the sixth sternite is

    slightly decreased to 19.5 +/- 1.91.

    dsx9/dsx1 mutant males heterozygous for ix3 or Df(2R)en-B

    show feminisation, as judged by the following criteria:

    An average of 6 (+/- 4.19) ectopic vaginal teeth form. Fusion of dorso-lateral

    anal plates is seen in 70% of males. The number of bristles in the

    last transverse row in the foreleg basitarsus is decreased to 7.45

    +/-0.6 (this row forms the sex comb in males). The average number

    of bristles on the sixth sternite increases dramatically from near

    zero to 17.3 +/- 2.06.

    dsx9/dsx1 mutant males heterozygous for ix3 or Df(2R)en-B

    do not show significant masculinisation of pigmentation of the 6th

    tergite, which remains 95% (+/-4%) darkly pigmented.

    Xenogenetic Interactions
    Statement
    Reference
    Complementation and Rescue Data
    Comments
    Images (0)
    Mutant
    Wild-type
    Stocks (1)
    Notes on Origin
    Discoverer

    Garen.

    Comments
    Comments

    No sequence specific DNA binding activity by encoded product in gel mobility shift assays.

    External Crossreferences and Linkouts ( 0 )
    Synonyms and Secondary IDs (3)
    Reported As
    Symbol Synonym
    Name Synonyms
    Secondary FlyBase IDs
      References (2)