FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\ar1
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General Information
Symbol
Dmel\ar1
Species
D. melanogaster
Name
FlyBase ID
FBal0000692
Feature type
allele
Associated gene
ar
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Mutagen
Nature of the Allele
Allele class
Mutagen
spontaneous
Progenitor genotype
Cytology
Description
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
Associated Sequence Data
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
 
UniProtKB/Swiss-Prot
    UniProtKB/TrEMBL
      Expression Data
      Reporter Expression
      Additional Information
      Statement
      Reference
       
      Marker for
      Reflects expression of
      Reporter construct used in assay
      Human Disease Associations
      Disease Ontology (DO) Annotations
      Models Based on Experimental Evidence ( 0 )
      Disease
      Evidence
      References
      Modifiers Based on Experimental Evidence ( 0 )
      Disease
      Interaction
      References
      Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
       
      Disease-implicated variant(s)
       
      Phenotypic Data
      Phenotypic Class
      Phenotype Manifest In
      Detailed Description
      Statement
      Reference

      Abdomen rotation coincides with the termination of the prepupal period and movements of pupation. Torsion of the internal abdomen organs in pupae is in the same direction and degree of rotation as the external segments. Persisting larval muscles in the abdominal region are responsible for puparial abnormalities.

      (Marengo and Howland, 1942)

      Abdomen twisted clockwise through 45o to 60o; male external genitalia often missing. Puparia not so smooth as normal; larval segmentation remains. Puparia have deep constriction near posterior end just anterior to spiracles. RK2.

      External Data
      Interactions
      Show genetic interaction network for Enhancers & Suppressors
      Phenotypic Class
      Phenotype Manifest In
      Additional Comments
      Genetic Interactions
      Statement
      Reference
      Xenogenetic Interactions
      Statement
      Reference
      Complementation and Rescue Data
      Comments
      Images (0)
      Mutant
      Wild-type
      Stocks (0)
      Notes on Origin
      Discoverer
      Comments
      Comments

      Existing chromosomes marked ar1 also carry a lethal fourth chromosome allele and, in combination with Df(4)M101-1, show counterclockwise rotation of male abdomen when viewed from behind (Hochman, cited in FBrf0066905). Does not overlap wild type.

      External Crossreferences and Linkouts ( 0 )
      Synonyms and Secondary IDs (1)
      Reported As
      Symbol Synonym
      ar1
      Name Synonyms
      Secondary FlyBase IDs
        References (2)