FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term reduction ID (Ontology) FBcv:0000477 (FlyBase CV)
Definition Mutation caused by a recombination event between tandem repeats of rRNA genes that causes unequal chromatid exchange at crossing over and a reduction in the number of functional copies. It leads to an aggravation of phenotype, in the case of a mutation causing a change from a wildtype to mutant phenotype or a change from a mutant to a more severe mutant phenotype.[ FlyBase:FBrf0026874 ]
Also Known As "mutation induced by reduction"
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Alleles (FBal)  MUTAGEN       1
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 Alleles
 reduction (all annotations which use CV term, excluding "NOT" statements)       1
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  origin of mutation
   |__recombination
       |__reduction  1 rec.
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