FB2026_03 , released September 17, 2026
Aberration: Dmel\In(1)FM1
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General Information
Symbol
In(1)FM1
Species
D. melanogaster
Name
FlyBase ID
FBab0010486
Feature type
chromosomal_inversion
Computed Cytological Breakpoints (relative to progenitor)
Sequenced Breakpoints (relative to progenitor)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order

1Lt-1B2 | 20F-11F4 | 4E1-11F2 | 4D7-1B3 | 20F-1Rt

(Bloomington Drosophila Stock Center, 2026.6.26)
Progenitor
In(1)dl-49
(Merriam, 2017)
In(1)sc8
(Merriam, 2017)
Mutagen
recombination
Class of aberration (relative to wild type)
chromosomal_inversion
Class of aberration (relative to progenitor)
Cytological Breakpoints (relative to progenitor)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data
Genetic mapping information
Comments
Comments on Cytology
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

    Female sterile.

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

    Consists of two inversions, In(1)sc8 (an inversion of 1B2-3;20F) and In(1)dl-49 (an inversion of 4D7-E1;11F2-4). The two together have been called "In(1)sc[8]+dl-49".

    (Parks and Cook, 2026.8.6)
    Balancer / Genotype Variants of the Aberration
    Separable Components
     
    Other Comments
     

    In(1)sc8 and In(1)dl-49 were independently recombined together at least three times with different markers present. One isolate was called FM1 ("FM1" is now used for all three recombinants). It has the markers y[31d] sc[8] w[a] lz[S] Bar[1]. The other two independent isolates are listed here under their original symbols. FM0 : y[31d] sc[8] w[1] v[Of] m[2] f[1] Bar[1] (now called FM1, w[1] lz[+] v[Of] m[2] f[1]). M6-ML y[31d] sc[8] w[a] v[Of] f[1] (now called FM1, lz[+] v[Of] f[1] Bar[+]). Note that an early publication (and subsequently Lindsley and Zimm, FBrf0066905) reported that FM0 carried cv[1], but this was an error.

    (Parks and Cook, 2026.8.6)

    Effective in eliminating recombination with X chromosomes in normal sequence.

    Synonyms and Secondary IDs (4)
    Reported As
    Symbol Synonym
    FM1
    (Parks and Cook, 2026.8.6)
    In(1)FM1
    (Hutter, 1990)
    In(1)sc8+In(1)dl-49
    (Merriam, 2017)
    In(1)sc8+dl-49
    (Bloomington Drosophila Stock Center, 2026.6.26)
    Name Synonyms
    Secondary FlyBase IDs
      References (15)