FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Aberration: Dmel\Df(2L)S1
Open Close
General Information
Symbol
Df(2L)S1
Species
D. melanogaster
Name
Deficiency (2L) Star
FlyBase ID
FBab0001536
Feature type
chromosomal_deletion
Computed Breakpoints include

21C4;22A2-22A3

Features within 21C4--22A3
Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
X ray
(Lewis, 1945)
Class of aberration (relative to wild type)
chromosomal_deletion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_deletion
(Lewis, 1945)
Breakpoints

21C3-21C4;22A2

(Lewis, 1945)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

ex << bk1 << ds << ast << bk2 << shr

Genetic mapping information
Comments
Comments on Cytology

Left break follows the 21C3 band, right break is just before the 22A3 band.

(Lewis, 1945)

Left limit of break 1 from non-inclusion of ex (FBrf0006343) Right limit of break 1 from polytene analysis (FBrf0006343) Limits of break 2 from polytene analysis (FBrf0006343)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
ast
(Lewis, 1945)
ds
(Lewis, 1945)
S
(Lewis, 1945)
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
    NOT in combination with other aberrations

    Heterozygotes show good viability and fertility.

    (Lewis, 1945)
    Stocks (0)
    Notes on Origin
    Discoverer

    E.B. Lewis, 1940.

     
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     
    Synonyms and Secondary IDs (5)
    Reported As
    Symbol Synonym
    Df(2L)S1
    Df-S1
    (Lewis, 1945)
    SDf1
    Name Synonyms
    Deficiency (2L) Star
    Star-Deficiency
    Secondary FlyBase IDs
      References (3)