FB2026_03 , released September 17, 2026
Aberration: Dmel\Df(2L)fn1
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General Information
Symbol
Df(2L)fn1
Species
D. melanogaster
Name
Deficiency (2L) formaldehyde induced
FlyBase ID
FBab0001812
Feature type
chromosomal_deletion
Computed Cytological Breakpoints (relative to progenitor)

34F4-34F5;35D4-35D5

Features within 34F4--35D5
Sequenced Breakpoints (relative to progenitor)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
formaldehyde
(Grau et al., 1984, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
Class of aberration (relative to wild type)
chromosomal_deletion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_deletion
(Gubb et al., 1990, Grau et al., 1984, O'Donnell et al., 1977)
Cytological Breakpoints (relative to progenitor)

34E4-34E5;35D1-35D2

(O'Donnell et al., 1977)

34F4-35A1;35D4-35D7

(Gubb et al., 1990)

[];35D5--35D7

(Grau et al., 1984)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

l(2)34Fa << bk1 << wb << lace << bk2 << CycE

Genetic mapping information
Comments
Comments on Cytology

Ref: FBrf0038047.

(Grau et al., 1984)

Left limit of break 1 from polytene analysis (FBrf0051930) Right limit of break 1 from inclusion of wb (FBrf0030161) Left limit of break 2 from polytene analysis (FBrf0051930) Right limit of break 2 from non-inclusion of CycE (FBrf0038047)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
Adh
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
Ankrd49
(Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
BicC
(Grau et al., 1984)
Ciapin1
(Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
ck
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
Cul3
(Ashburner et al., 1982, Ashburner et al., 1982)
DCTN5-p25
(Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
elA
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
elB
(Grau et al., 1984)
l(2)34Fc
(Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
l(2)34Fd
(Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
lace
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982)
mol
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
noc
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
osp
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, Woodruff and Ashburner, 1979)
Pburs
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
Pgant35A
(Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
PolD3
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982, Woodruff and Ashburner, 1979, Woodruff and Ashburner, 1979)
Rnmt
(Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
sna
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982)
stc
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982)
Su(H)
(Grau et al., 1984, Ashburner et al., 1982, Woodruff and Ashburner, 1979, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
Thg
(Ashburner et al., 1982, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
wb
(Ashburner et al., 1982, Woodruff and Ashburner, 1979, Woodruff and Ashburner, 1979, O'Donnell et al., 1977)
wor
(Grau et al., 1984, Ashburner et al., 1982, Ashburner et al., 1982)
Partially deleted / disrupted
Molecular Data
Completely deleted
Partially deleted
Genes NOT Deleted / Disrupted
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

    Weakly suppresses the zeste phenotype in a z1 w11E4; Tp(1;2)TE35B homologue.

    (Gubb et al., 1990)
    NOT in combination with other aberrations

    Chromosome acts as a weak trans-suppressor of a physical interaction between tandemly duplicated copies of w+, an interaction that is required for the suppression of genes by z1.

    (Gubb et al., 1990)
    Stocks (2)
    Notes on Origin
    Discoverer

    Sofer.

     

    Selected as ADH null on 1-penten-3-ol.

    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    The Df(2L)fn1 chromosome acts as a dominant strong suppressor of telomeric silencing (assayed using the effect of the chromosome on the eye colour phenotype of flies carrying "P{wvar}KR3-2", a stable "brown-red" variant of the P{3'WP-2,wvar}2Lt insertion), but this is a false positive result (the suppressor is not within the bounds of the deficient region) because the region of the deficiency is covered by one or more nonsuppressing deficiencies.

    (Mason et al., 2004)
    Synonyms and Secondary IDs (3)
    Reported As
    Symbol Synonym
    Df(2L)Adhfn1
    (O'Donnell et al., 1977)
    Df(2L)fn1
    Name Synonyms
    Deficiency (2L) formaldehyde induced
    Secondary FlyBase IDs
      References (13)