FB2026_03 , released September 17, 2026
Aberration: Dmel\In(1)At
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General Information
Symbol
In(1)At
Species
D. melanogaster
Name
Inversion (1) Attenuated
FlyBase ID
FBab0003879
Feature type
inverted_intrachromosomal_transposition
Computed Cytological Breakpoints (relative to progenitor)

18C4-18C6;20A2-20A3;16A4-16A5

Sequenced Breakpoints (relative to progenitor)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order

1Lt - 1B3 | 20F - 20A3 | 16A5 - 18C4 | 20A2 - 18C6 | 16A4 - 11F4 | 4E1 - 11F2 | 4D7 - 1B3 | 1Rt

Progenitor
In(1)Insc
Mutagen
X ray
(Valencia and Valencia, 1949)
Class of aberration (relative to wild type)
inverted_intrachromosomal_transposition
Class of aberration (relative to progenitor)
inverted_intrachromosomal_transposition
(Valencia and Valencia, 1949)
Cytological Breakpoints (relative to progenitor)

18C4-18C6;20A2-20A3;16A4-16A5

(Valencia and Valencia, 1949)
Causes alleles
Attenuated1
(Valencia and Valencia, 1949)
Carries alleles
Transposon Insertions
Formalized genetic data

bk3 hits At

Genetic mapping information
Comments
Comments on Cytology

All limits from polytene analysis (FBrf0063933)

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
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

    homozygous viable homozygous fertile

    Stocks (0)
    Notes on Origin
    Discoverer

    Valencia and Valencia, 1949.

     

    Induced on: In(1)scS1Lsc8R+dl-49.

    Mutagen comment: X rays soft.

    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     
    Synonyms and Secondary IDs (3)
    Reported As
    Symbol Synonym
    In(1)At
    Tp(1;1)At
    Name Synonyms
    Inversion (1) Attenuated
    Secondary FlyBase IDs
      References (2)