FB2026_02 , released June 18, 2026
Aberration: Dmel\Dp(1;f)22A
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General Information
Symbol
Dp(1;f)22A
Species
D. melanogaster
Name
FlyBase ID
FBab0024558
Feature type
free_duplication
Also Known As
22A
Computed Breakpoints include
Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Dp(1;f)γ238
(Donaldson and Karpen, 1997, Murphy and Karpen, 1995)
Mutagen
gamma ray
(Donaldson and Karpen, 1997, Murphy and Karpen, 1995)
Class of aberration (relative to wild type)
free_duplication
Class of aberration (relative to progenitor)
chromosomal_deletion
(Murphy and Karpen, 1995)
Breakpoints
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

bk1 << p1:bk1 << p1:bk6 << bk2

Genetic mapping information
Comments
Comments on Cytology

"Terminal" deletion.

(Donaldson and Karpen, 1997)
Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
y
(Murphy and Karpen, 1995)
Partially deleted / disrupted
Molecular Data
Completely deleted
Partially deleted
Genes NOT Deleted / Disrupted
Complementation Data
 
ry
(Murphy and Karpen, 1995)
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 (0)
    If no genes are listed here, it may be because the affected region is very large. The JBrowse insert above may show an error for the same reason, and other FlyBase tools such as CytoSearch may also fail for large regions. You can contact FlyBase for more help.
    In these cases, there will be no "Export to Hitlist" button to the left.
    Phenotypic Data
    In combination with other aberrations

    Dp(1;f)γ878/Dp(1;f)22A heterozygotes increases y+ expression, to 33% of full Dp(1;f)γ158 trans-suppression. y+ expression is quantitated in triple row bristles.

    (Donaldson and Karpen, 1997)
    NOT in combination with other aberrations
    Stocks (0)
    Notes on Origin
    Discoverer
     
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    Acentric mini-chromosomes are lost at a moderate but elevated rate during male germline mitotic divisions and in female mitosis, but appear to be transmitted efficiently through pre-blastoderm mitoses and male meiosis. mit(1)15 can localise to the mini-chromosome. Acentric mini-chromosomes are normally inherited, transmission is achieved by a mechanism similar to normal centromere-containing chromosomes, which utilises nod and mit(1)15 and involves movement to the spindle poles. Newly generated acentric fragments from the tip of the normal X chromosome do not display neocentromere activity in male meiosis I.

    (Williams et al., 1998)

    Chromosome is 225kb in size.

    (Donaldson and Karpen, 1997)

    Monosome transmission behaviour from both male and female parents is highly unstable, all heterochromatin is deleted.

    (Murphy and Karpen, 1995)
    Synonyms and Secondary IDs (3)
    Reported As
    Symbol Synonym
    22A
    (Lopez et al., 2000, Williams et al., 1998, Donaldson and Karpen, 1997)
    Dp(1;f)22A
    Dp(1;f)γ22A
    Name Synonyms
    Secondary FlyBase IDs
    • FBab0026888
    References (4)