FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

heat sensitive loss of function allele

ID (Ontology)

FBcv:0000746 (FlyBase CV)

Definition

An allele that at high temperatures but not low temperatures, either makes no functional gene product, makes reduced levels of a normally functioning gene product or makes a gene product with reduced activity compared to wild-type.[ FlyBase:FBrf0049147 ]

Comment

Links to External Ontologies

Annotations

Records annotated with this term OR any of its CHILD TERMS

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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
heat sensitive loss of function allele (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

  loss of function allele
   |__temperature conditional loss of function allele
       |__heat sensitive loss of function allele  100 rec.
           |__heat sensitive amorphic allele 5 rec.
           |   |__heat sensitive amorphic allele - genetic evidence 3 rec.
           |   |__heat sensitive amorphic allele - molecular evidence 2 rec.
           |__heat sensitive hypomorphic allele 50 rec.
               |__heat sensitive hypomorphic allele - genetic evidence 49 rec.
               |__heat sensitive hypomorphic allele - molecular evidence 1 rec.

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

Secondary IDs

External Crossreferences & Linkouts