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General Information
D. melanogaster
Duplication (1;f) from Ring X
FlyBase ID
Feature type
Computed Breakpoints include


Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order

| 1A4 - 3A | 20 . 20F - 20A1 |

Class of aberration (relative to wild type)
Class of aberration (relative to progenitor)


Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

bk1 << y << kz << bk2

Genetic mapping information
Comments on Cytology

1A4-3A1 are duplicated in this free duplication.

Limits of break 1 from polytene analysis (FBrf0043249) Limits of break 2 from polytene analysis (citation unavailable) Left limit of break 3 from polytene analysis (citation unavailable) Right limit of break 3 from polytene analysis (FBrf0043249)

Sequence Crossreferences
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
Partially deleted / disrupted
Molecular Data
Completely deleted
Partially deleted
Genes NOT Deleted / Disrupted
Complementation Data
Molecular Data
Genes Duplicated
Genes NOT Duplicated
Affected Genes Inferred by Location
    Phenotypic Data
    In combination with other aberrations
    NOT in combination with other aberrations

    Dp(1;f)R acts as a dominant enhancer of telomeric position effect of P{hsp26-pt-T}39C-5 and P{hsp26-pt-T}39C-27 in males.

    Mutation changes the level of w expression in ph-plac+3 flies; eye colour is darker.

    Morphological changes present in the 1B region: continuous compaction, bands and interbands at euchromatin and heterochromatin junction fuse to form a block of chromatin, and discontinuous compaction, morphologically normal zones separate at least two zones of compaction.

    Variegation for dor, ac, svr, pn, and kz decreased as Y's are added. Variegation for y insensitive to Y's.

    Stocks (2)
    Notes on Origin

    Schultz, 10th April 1935.


    deletion of most of X euchromatin

    Balancer / Genotype Variants of the Aberration
    Separable Components
    Other Comments
    Synonyms and Secondary IDs (6)
    Reported As
    Symbol Synonym
    Name Synonyms
    Duplication (1;f) from Ring X
    Secondary FlyBase IDs
      References (14)