FB2026_03 , released September 17, 2026
Aberration: Dmel\In(1)FM4
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General Information
Symbol
In(1)FM4
Species
D. melanogaster
Name
FlyBase ID
FBab0003927
Feature type
chromosomal_inversion
Computed Cytological Breakpoints (relative to progenitor)

3C;4E-4F

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

1Lt-1B2 | 20F-11F4 | (4E-4E) | 3C-4D7 | 11F2-4F | 3C-1B3 | 20F-1Rt

(Bloomington Drosophila Stock Center, 2026.6.26)
Progenitor
In(1)FM1
(Merriam, 2017)
Mutagen
X ray
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
Carries alleles
Transposon Insertions
Formalized genetic data
Genetic mapping information
Comments
Comments on Cytology

All limits from polytene analysis (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

    Male viable. Male fertile. Homozygous female viable. Female sterile owing to dm[1].

    (Lindsley and Zimm, 1992)
    Stocks (0)
    Notes on Origin
    Discoverer

    R. F. Grell, 1954.

     

    Generated By R.F. Grell by X-ray inducing an inversion of 3C;4E-F on a chromosome carrying both In(1)sc8 (an inversion of 1B2-3;20F) and In(1)dl-49 (an inversion of 4D7-E1;11F2-4) (FBrf0066905).

    (Parks and Cook, 2026.8.6)
    Balancer / Genotype Variants of the Aberration
    Separable Components
     
    Other Comments
     
    Synonyms and Secondary IDs (2)
    Reported As
    Symbol Synonym
    FM4
    (Parks and Cook, 2026.8.6)
    In(1)FM4
    (Bloomington Drosophila Stock Center, 2026.6.26)
    Name Synonyms
    Secondary FlyBase IDs
      References (10)