Open Close
General Information
D. melanogaster
FlyBase ID
Feature type
Also Known As
Computed Breakpoints include


Deleted Segment
Sequence coordinates
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

ben << bk1 << sesF << bk2 << eag

Genetic mapping information

This deletion removes multiple ribosomal protein-coding genes (in addition to other genes).

Comments on Cytology

Left limit of break 1 from polytene analysis (FBrf0080375) Right limit of break 1 from polytene analysis (FBrf0048204) Left limit of break 2 from polytene analysis (FBrf0086390) Right limit of break 2 from polytene analysis (FBrf0048204)

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

Embryos hemizygous for Df(1)KA9 exhibit severe defects in the ventral nerve cord, with a near complete loss of midline crossing in some axon commissures; midline crossing of EW, EG and SP1 neurons is severely disrupted.

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

The morphology of the proventriculus is normal in hemizygotes.

Shows no maternal enhancement of dpphr4.

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

Embryos exhibit variable defects in the formation of commissural pathways. Scer\GAL4rho.PL induced expression of P{UAS-NETA} or P{UAS-NETB} significantly rescued the CNS phenotype.

CNS defect in embryos: axon commissures are drastically thinner or missing amd the longitudinal tracts are highly disorganised and discontinuous. Commissural phenotype is only weakly rescued by expression of P{slit-NetA} or P{slit-NetB}.

Heterozygosity for this deletion has no effect on the mutant ovarian phenotype of ovoD2.

Hemizygous embryos were examined with polarised light microscopy and antibody staining and found to have wild type muscle pattern and contraction.

incomplete condensation and splitting of ventral nerve cord in hemizygous embryos

Stocks (2)
Notes on Origin
Balancer / Genotype Variants of the Aberration
Separable Components
Other Comments
Synonyms and Secondary IDs (3)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (38)