FB2026_03 , released September 17, 2026
Aberration: Dmel\Dp(2;2)S
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General Information
Symbol
Dp(2;2)S
Species
D. melanogaster
Name
Duplication (2;2) Star
FlyBase ID
FBab0003500
Feature type
tandem_duplication
Computed Cytological Breakpoints (relative to progenitor)

21D3;21E2

Features within 21D3--21E2
Sequenced Breakpoints (relative to progenitor)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
spontaneous
Class of aberration (relative to wild type)
tandem_duplication
(FlyBase, 2007)
Class of aberration (relative to progenitor)
tandem_duplication
(Lewis, 1945)
Cytological Breakpoints (relative to progenitor)

21D3-21D4;21E1-21E2

(Lewis, 1945)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

bk1 << S << ast << bk2

Genetic mapping information
Comments
Comments on Cytology

Left limit of break 1 from polytene analysis (FBrf0006343) Right limit of break 1 from polytene analysis (citation unavailable) Left limit of break 2 from inclusion of S (FBrf0006343) Right limit of break 2 from polytene analysis (FBrf0006343)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
Partially deleted / disrupted
Molecular Data
Completely deleted
Partially deleted
Genes NOT Deleted / Disrupted
Complementation Data
 
Molecular Data
 
Genes Duplicated
Complementation Data
Completely duplicated
ast
(Lewis, 1945)
S
(Lewis, 1945)
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
    NOT in combination with other aberrations

    Duplication appears wild type when homozygous or when heterozygous with ast. Heterozygous with S, it has normal or only slightly roughened eyes. Various combinations of S and ast alleles have been introduced into the duplication.

    Stocks (1)
    Notes on Origin
    Discoverer

    E. B. Lewis, Sep. 1939.

     

    Arose in: an ast1 female.

    (Lewis, 1945)
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
    Other Comments
     

    Through unequal crossing over, a triplication and a quintuplication of the region <up>i.e. Dp(2;2;2)S and Dp(2;2;2;2;2)S</up> have been synthesized.

    Synonyms and Secondary IDs (3)
    Reported As
    Symbol Synonym
    Dp(2;2)S
    Dp-S
    (Lewis, 1945)
    Name Synonyms
    Duplication (2;2) Star
    Secondary FlyBase IDs
      References (4)