FB2026_02 , released June 18, 2026
Allele: Dmel\mor4
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General Information
Symbol
Dmel\mor4
Species
D. melanogaster
Name
FlyBase ID
FBal0012414
Feature type
allele
Associated gene
Dmel\mor
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Mutagen
Nature of the Allele
Allele class
Mutagen
ethyl methanesulfonate
(Kennison and Tamkun, 1988)
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

      12% of heterozygotes have ectopic or duplicated macrochaetae.

      (Armstrong et al., 2005)

      Homozygous clones in the haltere are found infrequently. These clones form vesicles of wing formation segregated inside the haltere. Homozygous clones also cause transformation of the metanotum to mesonotum. Homozygous clones in the posterior wing cause distortions in wing shape; venation is disrupted and large socketed bristles appear along the posterior wing margin. Homozygous clones in the leg cause the femur and tibia to be short and twisted, and the tarsal segments to be enlarged. Leg clones also contain extra bristles. Clones in the anterior first leg are transformed to anterior second leg or have extra sex comb teeth. Clones in the second leg are twisted, have vesicles of extra tissue, or cause the absence of the entire leg. Tarsal segments are often fused, duplicated or absent. Clones in the third leg often have partial or complete duplications of distal structures, or the entire leg morphology is abnormal. Clones in the first and third legs often cause truncations of the leg. Homozygous clones in adult abdominal segments 1 to 6 survive and appear normal. Clones in the 7th abdominal segment appear normal except when associated with abnormalities in the genitalia, including the absence of part of the genital plate or fusions of parts of the genital structures.

      (Brizuela and Kennison, 1997)
      External Data
      Interactions
      Show genetic interaction network for Enhancers & Suppressors
      Phenotypic Class
      Enhanced by
      Statement
      Reference

      mor4 has visible | dominant phenotype, enhanceable by brm[+]/brm2

      (Armstrong et al., 2005)
      Enhancer of
      Statement
      Reference

      mor[+]/mor4 is an enhancer of visible | dominant phenotype of brm2

      (Armstrong et al., 2005)
      Suppressor of
      Statement
      Reference

      mor[+]/mor4 is a suppressor of visible | dominant phenotype of Snr1E1

      (Curtis et al., 2011)

      mor4 is a suppressor of visible | dominant | homeotic phenotype of Pc4

      (Brizuela and Kennison, 1997)

      mor4 is a suppressor of visible | dominant | adult stage phenotype of Pc4

      (Brizuela and Kennison, 1997)
      Other
      Statement
      Reference

      brm2, mor[+]/mor4 has visible | dominant phenotype

      (Armstrong et al., 2005)

      brm[+]/brm2, mor4 has visible phenotype

      (Armstrong et al., 2005)
      Phenotype Manifest In
      Enhanced by
      Statement
      Reference

      mor4 has macrochaeta phenotype, enhanceable by brm[+]/brm2

      (Armstrong et al., 2005)
      Enhancer of
      Statement
      Reference

      mor[+]/mor4 is an enhancer of macrochaeta phenotype of brm2

      (Armstrong et al., 2005)
      Suppressor of
      Statement
      Reference

      mor[+]/mor4 is a suppressor of wing vein | ectopic phenotype of Snr1E1

      (Curtis et al., 2011)

      mor4 is a suppressor of mesothoracic leg phenotype of Pc4

      (Brizuela and Kennison, 1997)

      mor4 is a suppressor of metathoracic leg phenotype of Pc4

      (Brizuela and Kennison, 1997)

      mor4 is a suppressor of sex comb phenotype of Pc4

      (Brizuela and Kennison, 1997)

      mor4 is a suppressor of phenotype of Pc4

      (Kennison and Tamkun, 1988)
      Other
      Additional Comments
      Genetic Interactions
      Statement
      Reference

      Suppresses the extra sex comb phenotype of Pc4, Ts(YLt;2Lt)L124. Causes between 50% and 100% suppression of the Pc4/+ extra sex combs phenotype.

      (Kennison and Tamkun, 1988)
      Xenogenetic Interactions
      Statement
      Reference
      Complementation and Rescue Data
      Comments
      Images (0)
      Mutant
      Wild-type
      Stocks (0)
      Notes on Origin
      Discoverer
      External Crossreferences and Linkouts ( 0 )
      Synonyms and Secondary IDs (1)
      Reported As
      Symbol Synonym
      mor4
      (Curtis et al., 2011, Chang et al., 2007)
      Name Synonyms
      Secondary FlyBase IDs
        References (6)