FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

hypomorphic allele

ID (Ontology)

FBcv:0000690 (FlyBase CV)

Definition

Allele that makes a gene product that is functionally equivalent to wild-type but in a lesser amount or with lowered activity.[ FlyBase:FBrf0002371 FlyBase:FBrf0049147 ]

Also Known As

"hypomorph"

Comment

Links to External Ontologies

Annotations

Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

Results list data from multiple species. Choose a record type above to open its HitList.

Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Alleles (FBal)	ALLELE_CLASS
Alleles (FBal)	PROMOTED_CLASS

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Alleles
hypomorphic allele (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

  allele class
   |__loss of function allele
       |__hypomorphic allele  2958 rec.
           |__hypomorphic allele - genetic evidence 2370 rec.
           |   |__temperature conditional hypomorphic allele - genetic evidence(+) 56 rec.
           |__hypomorphic allele - molecular evidence 611 rec.
           |   |__temperature conditional hypomorphic allele - molecular evidence(+) 2 rec.
           |__temperature conditional hypomorphic allele 62 rec.
               |__cold sensitive hypomorphic allele(+) 7 rec.
               |__heat sensitive hypomorphic allele(+) 50 rec.
               |__temperature conditional hypomorphic allele - genetic evidence(+) 56 rec.
               |__temperature conditional hypomorphic allele - molecular evidence(+) 2 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	loss of function allele
Part of
Synonyms & Secondary IDs
Synonyms
	"hypomorph" EXACT
Secondary IDs

External Crossreferences & Linkouts