FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

cold sensitive antimorphic allele - genetic evidence

ID (Ontology)

FBcv:0000764 (FlyBase CV)

Definition

An allele inferred to make a gene product that is antagonistic to the wild-type gene product at low temperatures (restrictive temperatures) but not at high temperatures (permissive temperatures) from the observation that, at the non-permissive temperatures, the phenotype over a deficiency is stronger than that over a wild-type allele, which in turn is stronger than that in the presence of a duplication of the wild-type locus.[ FlyBase:FBrf0002371 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
cold sensitive antimorphic allele - genetic evidence (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

antimorphic allele - genetic evidence
 |__temperature conditional antimorphic allele - genetic evidence__
cold sensitive gain of function allele                             |
 |__cold sensitive antimorphic allele______________________________|
temperature conditional antimorphic allele                         |
 |__cold sensitive antimorphic allele______________________________|
 |__temperature conditional antimorphic allele - genetic evidence__|
                                                                   cold sensitive antimorphic allele - genetic evidence  3 rec.

Spanning Tree View Settings
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Relationships
Is a	cold sensitive antimorphic allele temperature conditional antimorphic allele - genetic evidence
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Synonyms & Secondary IDs
Synonyms

Secondary IDs

External Crossreferences & Linkouts