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General Information
D. melanogaster
FlyBase ID
Feature type
Computed Breakpoints include
Sequence coordinates
X:1,658,040..1,661,793 [+] (Df(1)S39:bk2)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Class of aberration (relative to wild type)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

brc << bk1 << l(1)1Ea << br << bk2 << dor

Genetic mapping information

This deletion removes a single ribosomal protein-coding gene (though other genes are also removed).

Breakpoint(s) molecularly mapped

2B5-6 breakpoint between DNA coordinates 217 and 220.8 kb (Chao and Guild, 1986, EMBO J. 5: 143-50).

Comments on Cytology

Deletion of 16/18 bands.

Left limit of break 1 from polytene analysis (FBrf0034268) Right limit of break 1 from polytene analysis (citation unavailable) Left limit of break 2 from inclusion of br (FBrf0034402) Right limit of break 2 from polytene analysis (FBrf0035971)

Sequence Crossreferences
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
    Phenotypic Data
    In combination with other aberrations
    NOT in combination with other aberrations

    Flies heterozygous for the deletion do not show a Minute bristle phenotype.

    Shows no maternal enhancement of dpphr4.

    Dominantly causes tergite defects in less than 50% of run3 heterozygotes.

    Heterozygosity for this deletion suppresses the mutant ovarian phenotype of ovoD2.

    No significant change in female lethality when in combination with Sxlf1.

    Hemizygous embryos were examined with polarised light microscopy and antibody staining: muscle pattern is normal but movement is extremely impaired.

    Heterozygous females exhibit reduced viability and fertility.

    Mutants exhibit a dominant br phenotype.

    Inversion produces a su(wa) effect (Lefevre). Df(1)S39/+ females slight br Df(1)S39/br females lethal (Lefevre).

    Stocks (2)
    Notes on Origin

    Schultz, 1944.

    Balancer / Genotype Variants of the Aberration
    Separable Components
    Other Comments

    Replication normal.

    Synonyms and Secondary IDs (7)
    Reported As
    Name Synonyms
    Secondary FlyBase IDs
    • FBab0004046
    References (65)