FB2026_03 , released September 17, 2026
Aberration: Dmel\In(1)Cl
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General Information
Symbol
In(1)Cl
Species
D. melanogaster
Name
Inversion (1) Cl
FlyBase ID
FBab0003902
Feature type
chromosomal_inversion
Computed Cytological Breakpoints (relative to progenitor)

4A5-4B1;17A6

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

1Lt-4A5 | 17A6-4B1 | 17A6-1Rt

(Bloomington Drosophila Stock Center, 2026.6.26)
Progenitor
Mutagen
spontaneous
Class of aberration (relative to wild type)
chromosomal_inversion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_inversion
Cytological Breakpoints (relative to progenitor)
Causes alleles
l(1)C1
Carries alleles
Bar1
(Lindsley and Zimm, 1992)
sc1
(Lindsley and Zimm, 1992)
sl1
(Lindsley and Zimm, 1992)
t2
(Lindsley and Zimm, 1992)
v1
(Lindsley and Zimm, 1992)
Transposon Insertions
Formalized genetic data

ec << bk1 << l(1)C << os << bk2 << CrebB-17A

Genetic mapping information
Comments
Comments on Cytology

Left limit of break 1 from polytene analysis (citation unavailable) Right limit of break 1 from complementation mapping against l(1)C (citation unavailable) Left limit of break 2 from polytene analysis (citation unavailable) Right limit of break 2 from complementation mapping against CrebB-17A (citation unavailable)

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.
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    Phenotypic Data
    In combination with other aberrations
    NOT in combination with other aberrations

    About 0.35% primary and 37% secondary exceptions. Total recombination about 1%.

    Stocks (5)
    Notes on Origin
    Discoverer

    Muller, Oct. 1920.

     

    on a sc t2 v sl B chromosome

    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    This aberration may be used as a balancer.

    (FlyBase Curators, 2006-)

    Male lethal due to l(1)C1. Suppresses crossing over in the X chromosome. Originally used in recovery of sex-linked recessive lethals; replaced by Basc for this purpose.

    (Lindsley and Zimm, 1992)
    Synonyms and Secondary IDs (3)
    Reported As
    Symbol Synonym
    ClB
    (FlyBase Curators, 2006-)
    In(1)Cl
    (Bloomington Drosophila Stock Center, 2026.6.26)
    Name Synonyms
    Inversion (1) Cl
    Secondary FlyBase IDs
      References (10)