FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term amorphic allele ID (Ontology) FBcv:0000688 (FlyBase CV)
Definition An allele that completely lacks function, coding either for a completely inactive gene product or none at all.[ FlyBase:FBrf0002371 FlyBase:FBrf0049147 ]
Comment
Links to External Ontologies
Annotations
Records annotated with this term OR any of its CHILD TERMS
    Results list data from multiple species. Click on a button above and use the 'Filter by species' options on the resulting HitList to retrieve species-specific data.
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  ALLELE_CLASS      15
Alleles (FBal)  PROMOTED_CLASS      13
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles
 amorphic allele (all annotations which use CV term, excluding "NOT" statements)      15
Spanning Tree (Parents/Children)
Only view relationship: 
  allele class
   |__loss of function allele
       |__amorphic allele  4287 rec.
           |__amorphic allele - genetic evidence 2018 rec.
           |   |__temperature conditional amorphic allele - genetic evidence(+) 6 rec.
           |__amorphic allele - molecular evidence 2363 rec.
           |   |__temperature conditional amorphic allele - molecular evidence(+) 2 rec.
           |__temperature conditional amorphic allele 8 rec.
               |__cold sensitive amorphic allele(+) 1 rec.
               |__heat sensitive amorphic allele(+) 5 rec.
               |__temperature conditional amorphic allele - genetic evidence(+) 6 rec.
               |__temperature conditional amorphic allele - molecular evidence(+) 2 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a loss of function allele
Part of
hide Synonyms & Secondary IDs
Synonyms
  • "amorph" RELATED
    "null" RELATED
Secondary IDs
hide External Crossreferences & Linkouts