FB2026_02 , released June 18, 2026
Aberration: Dmel\In(1)FM7
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General Information
Symbol
In(1)FM7
Species
D. melanogaster
Name
FlyBase ID
FBab0003929
Feature type
chromosomal_inversion
Also Known As
FM7
Computed Breakpoints include
Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order

1Lt - 1B2 | 20F - 20A | 15D - 20A | 15D - 11F4 | 4E1 - 11F2 | 4D7 - 1B3 | 1Rt

Progenitor
In(1)FM6
(Merriam, 2017)
In(1)sc8+dl-49
(Merriam, 2017)
Mutagen
recombination
Class of aberration (relative to wild type)
chromosomal_inversion
Class of aberration (relative to progenitor)
Breakpoints
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data
Genetic mapping information
Comments
Comments on Cytology

Multiply inverted balancer of the X chromosome.

(Rasooly and Robbins, 1991)
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

    Heterozygosity for In(1)FM7 results in a complete, or near complete, suppression of exchange along the length of the X chromosome.

    (Gong et al., 2005)

    Males and homozygous females viable and fertile.

    Stocks (14)
    Notes on Origin
    Discoverer
     
    Balancer / Genotype Variants of the Aberration
     
    FM7a
    (Miller et al., 2020, Miller et al., 2019, Merriam, 2017, Miller et al., 2016, Lattao et al., 2011, Subramanian and Bickel, 2009, FlyBase Curators, 2006-)
    FM7a-Bar+
    (FlyBase Curators, 2006-)
    FM7a-nod4
    (FlyBase Curators, 2006-)
    FM7a-P{sChFP}1
    (Parkhurst, 2011.4.14)
    FM7a-P{Tub-AcrIIA4.RFP+}17
    (Han, 2025-)
    FM7a-P{Tub-AcrIIA4.RFP+}46
    (Han, 2025-)
    FM7b
    (Merriam, 2017, FlyBase Curators, 2006-)
    FM7c
    (Miller et al., 2020, Merriam, 2017, Miller et al., 2016, FlyBase Curators, 2006-)
    FM7c-2xTb-RFP
    (Pina and Pignoni, 2012)
    FM7c-10
    (FlyBase Curators, 2006-)
    FM7c-34
    (FlyBase Curators, 2006-)
    FM7c-actLacZ
    (FlyBase Curators, 2006-)
    FM7c-Bar+
    (FlyBase Curators, 2006-)
    FM7c-ctS
    (FlyBase Curators, 2006-)
    FM7c-cvWJB,fPDB
    (Benner and Oliver, 2018, Benner and Oliver, 2018.11.9)
    FM7c-FTG
    (FlyBase Curators, 2006-)
    FM7c-P{Dfd-GMR-nvYFP}1,sn+
    (Miller and Hawley, 2014.4.15, Beitel, 2007.4.20)
    FM7c-sn+
    (FlyBase Curators, 2006-)
    FM7c-vHa
    (FlyBase Curators, 2006-)
    FM7c-vKa
    (FlyBase Curators, 2006-)
    FM7c-w+
    (FlyBase Curators, 2006-)
    FM7d
    (FlyBase Curators, 2006-)
    FM7e
    (FlyBase Curators, 2006-)
    FM7e-P{ftz-lac}
    (FlyBase Curators, 2006-)
    FM7f
    (FlyBase Curators, 2006-)
    FM7f-P{ftz-lac}
    (FlyBase Curators, 2006-)
    FM7g
    (FlyBase Curators, 2006-)
    FM7g-ctns
    (FlyBase Curators, 2006-)
    FM7g-Nnd-0
    (FlyBase Curators, 2006-)
    FM7h
    (FlyBase Curators, 2006-)
    FM7h-FS2
    (Sun et al., 2012)
    FM7h-FS4
    (Sun et al., 2012)
    FM7h-FS5
    (Sun et al., 2012)
    FM7h-FS5-GMR-GFP
    (Sun et al., 2012)
    FM7h-FS5-y
    (Sun et al., 2012)
    FM7h-NPlacr
    (FlyBase Curators, 2006-)
    FM7h-P{UAS.RMCE.w+}1B
    (Matinyan et al., 2021)
    FM7h-P{Ubi-GFP.U}1
    (Bilder, 2017.12.11)
    FM7i
    (FlyBase Curators, 2006-)
    FM7i-pAct-GFP
    (FlyBase Curators, 2006-)
    FM7j
    (FlyBase Curators, 2006-)
    FM7j-Bar1
    (FlyBase Curators, 2006-, Ryder et al., 2004, Roote, 2001.12.11)
    FM7k
    (FlyBase Curators, 2006-)
    FM7-l(1)TW241
    (FlyBase Curators, 2006-)
    FM7-TbB
    (Lattao et al., 2011)
    FM7w
    (FlyBase Curators, 2006-, Sekelsky et al., 1999)
    Separable Components
     
    Other Comments
     

    An excellent suppressor of recombination with normal-sequence X chromosomes. Commonly used in balancing, even in female fertile versions.

    Synonyms and Secondary IDs (4)
    Reported As
    Symbol Synonym
    FM7
    (Miller et al., 2016, Wittkopp et al., 2008, Xiang and Hawley, 2006, Urata et al., 1995)
    FM7i
    (Yudina et al., 2008)
    In(1)15DE-20AE
    (Gong et al., 2005)
    In(1)FM7
    Name Synonyms
    Secondary FlyBase IDs
      References (73)