FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\lost1
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General Information
Symbol
Dmel\lost1
Species
D. melanogaster
Name
FlyBase ID
FBal0263648
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Nature of the Allele
Caused by aberration
Cytology
Description

Imprecise excision of P{PTT-GA}lostZCL3169, creating a ~4 kb deletion that removes both predicted transcriptional start sites of lost and the first exon containing the translation start site of lost.

Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
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

59% of embryos produced from lost1 females fail to develop. Of those that complete embryogenesis, 7% show mild abdominal segmentation defects (partial deletions or fusions of segments).

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Enhanced by
Statement
Reference
Other
Additional Comments
Genetic Interactions
Statement
Reference

54% of embryos from lost1, rump1 mothers fail to develop.

Abdominal segmentation defects are more prevalent among surviving lost1, rump1 progeny (18%) than for either lost1 (7%) or rump1 (11%).

Embryos from lost1, rump1 mothers have significantly fewer pole cells than wild type.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Rescued by
Comments

All lost1 phenotypes are rescued by a single copy of lost+t5.7.

Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (2)