FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Aberration: Dmel\Df(2L)Sd57
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General Information
Symbol
Df(2L)Sd57
Species
D. melanogaster
Name
Deficiency (2L) Segregation distorter
FlyBase ID
FBab0001558
Feature type
chromosomal_deletion
Also Known As
SD-RomaR57
Computed Breakpoints include

37C6-37C7;38C1-38C2

Features within 37C6--38C2
Sequence coordinates
2L:19,167,082..19,168,648 [+] (Df(2L)Sd57:bk1)
(Stathakis et al., 1995)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
X ray
(Brittnacher and Ganetzky, 1983)
Class of aberration (relative to wild type)
chromosomal_deletion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_deletion
(Stathakis et al., 1995, Brittnacher and Ganetzky, 1983)
Breakpoints

37D1-37D2;38C1-38C2

(Brittnacher and Ganetzky, 1983)

37C6-37D1;38C1-38C2

(Stathakis et al., 1995)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

l(2)37Cg << bk1 << brat << l(2)38Aa << bk2 << ms(2)38C

Genetic mapping information
Comments

Breakpoint 1 was mapped to a XbaI-XhoI restriction fragment based on Figure 6. The position of the restriction fragment on the reference sequence was inferred by a FlyBase curator.

(Stathakis et al., 1995)

Distal breakpoint +38.55 - +40.55 kb <up>for coordinates see deficiency map under l(2)37</up>

Comments on Cytology

Ref: FBrf0039473.

(Stathakis et al., 1995)

Left limit of break 1 from polytene analysis (FBrf0084402) Right limit of break 1 from inclusion of γTub37C (FBrf0084402) Limits of break 2 from polytene analysis (FBrf0039473)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
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
    NOT in combination with other aberrations
    Stocks (0)
    Notes on Origin
    Discoverer
     

    Induced on: SD-Roma.

    (Temin, 1991, Brittnacher and Ganetzky, 1984)

    Induced on: an SD-Roma chromosome.

    (Brittnacher and Ganetzky, 1983)
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    37C6-37D1 breakpoint is between position +44.7 and +46.3 on the Ddc map relative to the HpaI restriction site near the 3' end of Ddc.

    (Stathakis et al., 1995)
    Synonyms and Secondary IDs (5)
    Reported As
    Symbol Synonym
    Df(2L)SD-R-m57
    Df(2L)Sd57
    (Connacher et al., 2024)
    Df(2L)SdR57
    (Brittnacher and Ganetzky, 1983)
    SD-RomaR57
    (Temin, 1991, Brittnacher and Ganetzky, 1984)
    Name Synonyms
    Deficiency (2L) Segregation distorter
    Secondary FlyBase IDs
      References (11)