FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term amorphic allele - molecular evidence ID (Ontology) FBcv:0000689 (FlyBase CV)
Definition An allele shown by molecular evidence to completely lack function, producing either a completely inactive gene product or none at all.[ FlyBase:FBrf0049147 ]
Also Known As "molecular null"
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Records annotated with this term OR any of its CHILD TERMS
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Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  ALLELE_CLASS    2361
Alleles (FBal)  PROMOTED_CLASS    2287
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 Full annotation statements 
Relevant FlyBase reports
 Alleles
 amorphic allele - molecular evidence (all annotations which use CV term, excluding "NOT" statements)    2361
Spanning Tree (Parents/Children)
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  loss of function allele
   |__amorphic allele
       |__amorphic allele - molecular evidence  2363 rec.
           |__temperature conditional amorphic allele - molecular evidence 2 rec.
               |__cold sensitive amorphic allele - molecular evidence
               |__heat sensitive amorphic allele - molecular evidence 2 rec.
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Is a amorphic allele
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Synonyms
  • "molecular null" EXACT
Secondary IDs
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