FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
CV Term Report
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General Information
Term male sterile ID (Ontology) FBcv:0000370 (FlyBase CV)
Definition A phenotype that is the inability of males to produce fertilized eggs as a result of mating.
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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    2026
Insertions (FBti)  STERILITY     431
Constructs (FBtp)  PHENOTYPIC_CLASS     193
Constructs (FBtp)  USES       2
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
 male sterile (all annotations which use CV term, excluding "NOT" statements)    2026    431    195
     male sterile | dominant      20      2      3
     male sterile | germline clone       1      1       --
     male sterile | heat sensitive      39       --       3
     male sterile | maternal effect      12       --       --
     male sterile | maternal effect | recessive       3       --       --
     male sterile | progressive       1       --       --
     male sterile | recessive     726    165      1
     male sterile | recessive | cold sensitive      14       --       --
     male sterile | recessive | heat sensitive       3       --       --
     male sterile | semidominant       1       --       --
     male sterile | somatic clone - tissue specific       1      1       --
     male sterile | temperature conditional       2       --       1
Spanning Tree (Parents/Children)
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  phenotype
   |__sterile
       |__male sterile  2654 rec.
           |__male sterile germline-dependent 5 rec.
           |__male sterile soma-dependent
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