FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term semi-sterile ID (Ontology) FBcv:0000365 (FlyBase CV)
Definition A phenotype that is a reduction in the ability to produce fertilized eggs as a result of mating to below 50% of wild-type.
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Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPIC_CLASS     139
Insertions (FBti)  STERILITY      21
Constructs (FBtp)  PHENOTYPIC_CLASS      21
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Insertions Constructs
 semi-sterile (all annotations which use CV term, excluding "NOT" statements)     139     21     21
     semi-sterile | conditional       2       --       --
     semi-sterile | dominant       1      1       --
     semi-sterile | dominant | female       2       --       --
     semi-sterile | female       3       --       --
     semi-sterile | female | germline clone | maternal effect       1       --       --
     semi-sterile | germline clone       2      1       --
     semi-sterile | progressive       1       --       --
     semi-sterile | recessive      21      5       --
     semi-sterile | recessive | heat sensitive       3       --       --
     semi-sterile | somatic clone - tissue specific       2       --       1
Spanning Tree (Parents/Children)
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  phenotypic class
   |__phenotype
       |__semi-sterile  2082 rec.
           |__female semi-sterile 1484 rec.
           |__male semi-sterile 497 rec.
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