FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Aberration: Dmel\In(2LR)alv
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General Information
Symbol
In(2LR)alv
Species
D. melanogaster
Name
FlyBase ID
FBab0004852
Feature type
chromosomal_inversion
Computed Breakpoints include

21C1;h38R-h46

Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
Mutagen
X ray
(Lewis, 1945)
Class of aberration (relative to wild type)
chromosomal_inversion
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_inversion
(Lewis, 1945)
Breakpoints

21B8;h38R-h46

(Lewis, 1945)
Causes alleles
Carries alleles
Transposon Insertions
Formalized genetic data

al << bk1

Genetic mapping information
Comments
Comments on Cytology

Left break is just before 21C1-21C2.

(Lewis, 1945)

Left limit of break 1 from complementation mapping against al (citation unavailable) Right limit of break 1 from polytene analysis (citation unavailable) Limits of break 2 from polytene analysis (FBrf0006343)

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.
    In these cases, there will be no "Export to Hitlist" button to the left.
    Phenotypic Data
    In combination with other aberrations

    Viable in combination with Df(2L)al.

    (Lewis, 1945)
    NOT in combination with other aberrations

    al position effect is suppressed by an extra Y chromosome.

    (Korochkina and Golubovsky, 1978)

    Homozygous lethal.

    (Lewis, 1945)

    Variegation suppressed by extra Y so that alv/al becomes wild type (Korochkina and Golubovsky, 1978, D. I. S. 53: 197). homozygous lethal.

    Stocks (0)
    Notes on Origin
    Discoverer

    E. B. Lewis, 1940.

     
    Balancer / Genotype Variants of the Aberration
     
    Separable Components
     
    Other Comments
     
    Synonyms and Secondary IDs (4)
    Reported As
    Symbol Synonym
    In(2LR)al-v
    In(2LR)alV
    (Lewis, 1945)
    In(2LR)alv
    alv
    Name Synonyms
    Secondary FlyBase IDs
    • FBal0000403
    References (5)