FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Aberration: Dmel\Df(2L)b84a2
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General Information
Symbol
Df(2L)b84a2
Species
D. melanogaster
Name
Deficiency (2L) black
FlyBase ID
FBab0001730
Feature type
chromosomal_deletion
Computed Breakpoints include

34C3;35B1

Features within 34C3--35B1
Sequence coordinates
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
(Tinker et al., 1998, Roote et al., 1996, Gubb et al., 1990)
Breakpoints

34C3;35A4

(Roote et al., 1996, Gubb et al., 1990)

34C3;35B1

(Tinker et al., 1998)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

bk1 << kuz << elA << bk2 << noc

Genetic mapping information
Comments
Comments on Cytology

Limits of break 1 from polytene analysis (FBrf0051930) Limits of break 2 from polytene analysis (FBrf0103384)

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

    Ts(Y;2Lt)GT2+Ts(YSt;2Rt)A80/Df(2L)b84a2 and Ts(Y;2Lt)a15+Ts(YSt;2Rt)A80/Df(2L)b84a2 animals usually die as pharate adults, escapers have crippled legs. Df(2L)A400/Df(2L)b84a2, Df(2L)el14/Df(2L)b84a2 and Ts(Y;2Lt)el4+Ts(YSt;2Rt)R15/Df(2L)b84a2 animals die as pharate adults with crippled legs. Df(2L)TE35B-12/Df(2L)b84a2, Df(2L)TE35BC-8/Df(2L)b84a2 and Df(2L)TE35B-1/Df(2L)b84a2 animals have an early lethal phenotype. Df(2L)el16/Df(2L)b84a2 and Df(2L)fn2/Df(2L)b84a2 animals usually die as pharate adults, rare escapers have crippled legs and show an "elbow" phenotype. Df(2L)el28/Df(2L)b84a2 animals often do not survive to adulthood, those that do have have an "elbow" phenotype. Df(2L)TE35B-6/Df(2L)b84a2 animals often do not survive to adulthood, those that do have an "elbow" phenotype.

    (Davis et al., 1997)

    Does not suppress the zeste phenotype in a z1 w11E4; Tp(1;2)TE35B homologue.

    (Gubb et al., 1990)
    NOT in combination with other aberrations

    Chromosome has no effect on the physical interaction between tandemly duplicated copies of w+ and z1, despite having breakpoints within the critical region.

    (Gubb et al., 1990)
    Stocks (0)
    Notes on Origin
    Discoverer

    G. Harrington.

     
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    Reported to not delete Adhr in error; see FBrf0141768 for correction.

    (Roote et al., 1996)
    Synonyms and Secondary IDs (2)
    Reported As
    Symbol Synonym
    Df(2L)b84a2
    Name Synonyms
    Deficiency (2L) black
    Secondary FlyBase IDs
      References (10)