FB2026_02 , released June 18, 2026
FB2026_02 , released June 18, 2026
Aberration: Dmel\C(4)RM
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General Information
Symbol
C(4)RM
Species
D. melanogaster
Name
FlyBase ID
FBab0000159
Feature type
homo_compound_chromosome
Also Known As
C(4)EN
Computed Breakpoints include
Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
X ray
Class of aberration (relative to wild type)
homo_compound_chromosome
Class of aberration (relative to progenitor)
Breakpoints
Causes alleles
Carries alleles
ci1
eyR
svspa-pol
svspa-pol
(Ahmad and Golic, 1998)
ci1
(Ruden et al., 1997)
eyR
(Ruden et al., 1997)
Transposon Insertions
Formalized genetic data
Genetic mapping information
Comments
Comments on Cytology

Two right arms of chromosome 4 attached proximally to a single centromere.

Sequence Crossreferences
DDBJ / EMBL / GenBank
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
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.
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    Phenotypic Data
    In combination with other aberrations
    NOT in combination with other aberrations

    Produces haplo-4 and triplo-4 progeny in crosses to normal diplo-4 flies. Tetra-4 flies carrying two copies of C(4)RM exhibit but slightly reduced viability (Grell, 1972, D. I. S. 48: 69). Segregates quasi-regularly from C(1)RM in C(1)RM/0; C(4)RM/0 females (Grell, 1963, Genetics 48: 1217-29).

    Stocks (4)
    Notes on Origin
    Discoverer

    E. B. Lewis.

     
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     

    Exists with different markers; presumably these are different syntheses. Exists with various marker combinations.

    Synonyms and Secondary IDs (2)
    Reported As
    Symbol Synonym
    C(4)EN
    (Hartl et al., 2008, Tomkiel et al., 2001, Moore et al., 1994)
    C(4)RM
    (Binder et al., 2025, Matsui et al., 2011, Haynes et al., 2007)
    Name Synonyms
    Secondary FlyBase IDs
      References (18)