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General Information
D. melanogaster
Duplication (1;1) Bar
FlyBase ID
Feature type
Sequence coordinates
X:17,334,493..17,334,493 (Dp(1;1)B:bk1)
X:17,537,969..17,537,969 (Dp(1;1)B:bk2)
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Class of aberration (relative to wild type)
Class of aberration (relative to progenitor)


Carries alleles
Transposon Insertions
Formalized genetic data

bk1 << B << bk2

Genetic mapping information

FlyBase curator comment: genomic coordinate updated from release 5 coordinate ( X:17 ,432,002) given in paper.

This Dp(1;1)B breakpoint lies in an intergenic region downstream of B-H2 and upstream of B-H1, and contains a roo element in the 5' to 3' orientation. FlyBase curator comment: genomic coordinate updated from release 5 coordinate ( X:17 ,228,526) given in paper.

Dp(1;1)B carries B-H1 (but not B-H2), together with an additional 7 other genes.

A roo-element insertion at the 16A7 breakpoint.

Comments on Cytology

All limits from polytene analysis (FBrf0005979)

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
Complementation Data
Molecular Data
Affected Genes Inferred by Location
Phenotypic Data
In combination with other aberrations
NOT in combination with other aberrations

Position-effect apparently resulting from juxtaposition of 16A1 with 16A7, which may undergo mutation to less extreme forms (e.g., Bi). Produces normal and triplicated Dp(1;1;1)BB products by unequal crossing over.

Stocks (1)
Notes on Origin

Tice, Feb. 1913.

Balancer / Genotype Variants of the Aberration
Separable Components
Other Comments
Synonyms and Secondary IDs (5)
Reported As
Symbol Synonym
Name Synonyms
Duplication (1;1) Bar
Secondary FlyBase IDs
    References (14)