FB2026_02 , released June 18, 2026
Aberration: Dmel\Df(2L)b84a5
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General Information
Symbol
Df(2L)b84a5
Species
D. melanogaster
Name
Deficiency (2L) black
FlyBase ID
FBab0001733
Feature type
chromosomal_deletion
Computed Breakpoints include

34D3-34D4;35B2

Features within 34D3--35B2
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
(Roote et al., 1996, Gubb et al., 1990)
Breakpoints

34D3-34D4;35B2-35B3

(Roote et al., 1996, Gubb et al., 1990)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

kuz << bk1 << l(2)34Db << noc << bk2 << osp

Genetic mapping information
Comments
Comments on Cytology

Left limit of break 1 from polytene analysis (FBrf0051930) Right limit of break 1 from inclusion of l(2)34Db (FBrf0091422) Left limit of break 2 from polytene analysis (FBrf0051930) Right limit of break 2 from non-inclusion of osp (citation unavailable)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
l(2)34Db
(Roote et al., 1996)
noc
(Roote et al., 1996)
Partially deleted / disrupted
Molecular Data
Completely deleted
Partially deleted
Genes NOT Deleted / Disrupted
Complementation Data
 
Adh
(Roote, 2002.1.15)
Molecular Data
 
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

    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
     
    Synonyms and Secondary IDs (2)
    Reported As
    Symbol Synonym
    Df(2L)b84a5
    Name Synonyms
    Deficiency (2L) black
    Secondary FlyBase IDs
      References (6)