FB2025_05 , released December 11, 2025

CV Term Report

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General Information
Term	heat sensitive amorphic allele	ID (Ontology)	FBcv:0000736 (FlyBase CV)
Definition	An allele that completely lacks function (i.e. whose gene productive is completely inactive) at high temperatures, but that retains at least some function at lower temperatures.[ FlyBase:FBrf0002371 FlyBase:FBrf0049147 ]
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Spanning Tree (Parents/Children)

amorphic allele
 |__temperature conditional amorphic allele______
temperature conditional loss of function allele  |
 |__temperature conditional amorphic allele______|
 |__heat sensitive loss of function allele_______|
                                                 heat sensitive amorphic allele  5 rec.
                                                  |__heat sensitive amorphic allele - genetic evidence 3 rec.
                                                  |__heat sensitive amorphic allele - molecular evidence 2 rec.

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Is a	temperature conditional amorphic allele heat sensitive loss of function allele
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