FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Aberration: Dmel\Df(1)2/19B
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General Information
Symbol
Df(1)2/19B
Species
D. melanogaster
Name
FlyBase ID
FBab0000206
Feature type
chromosomal_deletion
Also Known As
2/19B
Computed Breakpoints include

19F3-19F4;19F6

Features within 19F3--19F6
Sequence coordinates
X:21,359,908..21,360,420 [+] (Df(1)2/19B:bk1)
(Delaney et al., 1991)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
male recombination induced by dysgenesis
(Eeken et al., 1985)
Class of aberration (relative to wild type)
chromosomal_deletion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_deletion
Breakpoints
Causes alleles
Septin11
(Hayward et al., 1993)
Carries alleles
Transposon Insertions
Formalized genetic data

bk1 hits Sep1 << tuh1 << bk2 << eo

Genetic mapping information
Comments

Breakpoint(s) molecularly mapped Distal breakpoint of this deficiency falls within the transcription unit of Sep1.

(Hayward et al., 1993)
Comments on Cytology

Left limit of break 1 from non-inclusion of dod (FBrf0085507) Right limit of break 1 from inclusion of bbx (FBrf0059248) Left limit of break 2 from inclusion of tuh1 (FBrf0085507) Right limit of break 2 from polytene analysis (citation unavailable)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Genes NOT Deleted / Disrupted
Complementation Data
 
dod
(Maleszka et al., 1996)
eor
(Maleszka et al., 1996, Miklos and de Couet, 1990, Perrimon et al., 1989)
fliI
(Maleszka et al., 1996, de Couet et al., 1995, Hayward et al., 1993)
fog
(Miklos and de Couet, 1990, Perrimon et al., 1989)
intro
(Miklos and de Couet, 1990, Perrimon et al., 1989)
l(1)19Ed
(Miklos and de Couet, 1990, Perrimon et al., 1989)
l(1)19Fb
(Maleszka et al., 1996, Miklos and de Couet, 1990, Perrimon et al., 1989)
l(1)20Ca
(Miklos and de Couet, 1990, Perrimon et al., 1989)
l(1)20Cb
(Miklos and de Couet, 1990, Perrimon et al., 1989)
lf
(Miklos and de Couet, 1990, Perrimon et al., 1989)
lfl
(Maleszka et al., 1996, Miklos and de Couet, 1990, Perrimon et al., 1989)
mal
(Miklos and de Couet, 1990, Perrimon et al., 1989)
mell
(Miklos and de Couet, 1990, Perrimon et al., 1989)
Npc1b
(Miklos and de Couet, 1990, Perrimon et al., 1989)
peng
(Maleszka et al., 1996)
run
(Miklos and de Couet, 1990, Perrimon et al., 1989)
shakB
(Miklos and de Couet, 1990, Perrimon et al., 1989)
sol
(Maleszka et al., 1996, Hayward et al., 1993, Delaney et al., 1991)
soz
(Miklos and de Couet, 1990, Perrimon et al., 1989)
sph
(Miklos and de Couet, 1990, Perrimon et al., 1989)
stnA
(Miklos and de Couet, 1990, Perrimon et al., 1989)
stnB
(Perrimon et al., 1989)
su(f)
(Miklos and de Couet, 1990, Perrimon et al., 1989)
tty
(Maleszka et al., 1996)
tuh1
(Miklos and de Couet, 1990, Perrimon et al., 1989)
unc
(Maleszka et al., 1996, Miklos and de Couet, 1990, Perrimon et al., 1989)
uncl
(Miklos and de Couet, 1990, Perrimon et al., 1989)
vao
(Miklos and de Couet, 1990, Perrimon et al., 1989)
wap
(Maleszka et al., 1996, Miklos and de Couet, 1990, Perrimon et al., 1989)
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

    fliIFLI Df(1)16-129/fliIFLI Df(1)2/19B individuals are 100% viable and 98% of survivors can fly normally.

    (Maleszka et al., 1996)

    Lethal in combination with Df(1)16-129.

    (Miklos and de Couet, 1990)

    Lethality is complemented by Dp(1;Y)59k9-4.

    (Eeken et al., 1985)
    NOT in combination with other aberrations
    Stocks (0)
    Notes on Origin
    Discoverer
     

    Induced in a chromosome carrying mei-9a and mei-41D5.

    (Eeken et al., 1985)
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    The fliI gene on the Df(1)2/19B chromosome has an 5.4kb insertion, which is probably a mobile element.

    (Maleszka et al., 1996)

    Df(1)2/19B is not deleted for the fliI locus but fails to complement fliI alleles on account of the linked fliI2:19B.

    (de Couet et al., 1995)
    Synonyms and Secondary IDs (2)
    Reported As
    Symbol Synonym
    2/19B
    (Maleszka et al., 1998, Eeken et al., 1985)
    Df(1)2/19B
    Name Synonyms
    Secondary FlyBase IDs
      References (10)