FB2026_03 , released September 17, 2026
Aberration: Dmel\Df(3L)Brd6
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General Information
Symbol
Df(3L)Brd6
Species
D. melanogaster
Name
Deficiency (3L) Bearded
FlyBase ID
FBab0002300
Feature type
chromosomal_deletion
Computed Cytological Breakpoints (relative to progenitor)

70E;71F

Features within 70E--71F
Sequenced Breakpoints (relative to progenitor)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
gamma ray
Class of aberration (relative to wild type)
chromosomal_deletion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_deletion
(Galewsky and Schulz, 1992)
Cytological Breakpoints (relative to progenitor)

70D-70F;71F

(Galewsky and Schulz, 1992)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

bk1 << Brd << mrn << bk2 << brm

Genetic mapping information
Comments
Comments on Cytology

Limits of break 1 from polytene analysis (citation unavailable) Limits of break 2 from polytene analysis (FBrf0057258)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Genes NOT Deleted / Disrupted
Genes Duplicated
Complementation Data
Completely duplicated
Partially duplicated
Molecular Data
Completely duplicated
Partially duplicated
Genes NOT Duplicated
Complementation Data
 
Molecular Data
 
Affected Genes Inferred by Location (0)
    If no genes are listed here, it may be because the affected region is very large. The JBrowse insert above may show an error for the same reason, and other FlyBase tools such as CytoSearch may also fail for large regions. You can contact FlyBase for more help.
    In these cases, there will be no "Export to Hitlist" button to the left.
    Phenotypic Data
    In combination with other aberrations

    Df(3L)A5 complements Df(3L)Brd6 and Df(3L)Brd18 but not Df(3L)Brd20 or Df(3L)BK10. Df(3L)Q26 and Df(3L)A27 fail to complement Df(3L)Brd6, Df(3L)Brd18, Df(3L)Brd20 and Df(3L)BK10.

    (Melendez et al., 1995)
    NOT in combination with other aberrations
    Stocks (2)
    Notes on Origin
    Discoverer

    J. Posakony.

    (Galewsky and Schulz, 1992)

    Posakony.

     
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    The Df(3L)Brd6 chromosome acts as a dominant weak suppressor of telomeric silencing (assayed using the effect of the chromosome on the eye colour phenotype of flies carrying "P{wvar}KR3-2", a stable "brown-red" variant of the P{3'WP-2,wvar}2Lt insertion), but this is a false positive result (the suppressor is not within the bounds of the deficient region) because the region of the deficiency is covered by one or more nonsuppressing deficiencies.

    (Mason et al., 2004)
    Synonyms and Secondary IDs (4)
    Reported As
    Symbol Synonym
    Brd6
    (Chihara et al., 2005)
    Df(3L)Brd6
    (Ghabrial et al., 2011, Yagi et al., 2010, Brun et al., 2006)
    Df(3L)BrdR6
    (Galewsky and Schulz, 1992)
    Name Synonyms
    Deficiency (3L) Bearded
    Secondary FlyBase IDs
      References (12)