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General Information
D. melanogaster
FlyBase ID
Feature type
Also Known As
Computed Breakpoints include
Sequence coordinates
3R:6,652,681..6,657,124 [-] (Df(3R)9A99:bk1)
3R:6,872,548..6,874,435 [-] (Df(3R)9A99: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 << bcd << anon-84Bd << bk2 << Antp

Genetic mapping information

Breakpoint(s) molecularly mapped

Proximal breakpoint between coordinates +170 and +180 on DNA map of region 84B1-2 (Garber et al., 1983).

Comments on Cytology

Limits of break 1 from polytene analysis (FBrf0039287) Left limit of break 2 from inclusion of Scr (FBrf0042438) Right limit of break 2 from non-inclusion of Antp (FBrf0042438)

Sequence Crossreferences
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Genes NOT Deleted / Disrupted
Complementation Data
Molecular Data
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

The Df(3R)9A99 chromosome does not act as a dominant suppressor of telomeric silencing (assayed using the effect of the chromosome on the eye colour phenotype of flies carrying "P{wvar}KR3-2", a stable "brown-red" variant of the P{3'WP-2,wvar}2Lt insertion).

Shows dominant enhancement of dominant haltere phenotype caused by Ubx195 and Ubx9.22.

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

Phenocopies of the bcd mutant phenotype are produced if cytoplasm is removed from the anterior tip of embryos derived from heterozygous females.

Stocks (3)
Notes on Origin

G. Jurgens.

Balancer / Genotype Variants of the Aberration
Separable Components
Other Comments
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (17)