FB2026_03 , released September 17, 2026
Aberration: Dmel\T(1;2)C256
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General Information
Symbol
T(1;2)C256
Species
D. melanogaster
Name
Translocation (1;2) Crossover suppressor
FlyBase ID
FBab0005935
Feature type
chromosomal_translocation
Computed Cytological Breakpoints (relative to progenitor)

2A;7E;17A;18B;40-41

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

1Lt - 2A | 41 - 2Rt ; 1Rt - 18B | 17A - 18B | 7E - 17A | 7E - 2A | 40 - 2Lt

(Roberts, 1970)
Progenitor
Mutagen
X ray
(Roberts, 1970)
Class of aberration (relative to wild type)
chromosomal_translocation
Class of aberration (relative to progenitor)
Cytological Breakpoints (relative to progenitor)

2A;7E;17A;18B;40-41

(Roberts, 1970)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data
Genetic mapping information
Comments
Comments on Cytology

All limits from polytene analysis (FBrf0021565)

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

    male lethal crossing-over reduced in X

    Stocks (0)
    Notes on Origin
    Discoverer

    Roberts, 1964, 1965.

     

    selected on the basis of reduced recombination in one chromosome arm.

    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    Recombination reduced on chromosome 1.

    (Roberts, 1970)
    Synonyms and Secondary IDs (2)
    Reported As
    Symbol Synonym
    T(1;2)C256
    Name Synonyms
    Translocation (1;2) Crossover suppressor
    Secondary FlyBase IDs
      References (2)