FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term spermatozoon ID (Ontology) FBbt:00004954 (Fly Anatomy)
Definition A mature, haploid male gamete.[ FlyBase:FBrf0064778 ]
Also Known As "sperm"
Comment
Links to External Ontologies
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)  PHENOTYPE_MANIFEST_IN     430
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       3
Insertions (FBti)  PHENOTYPE_MANIFEST_IN     108
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN     106
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 Genes Insertions Constructs
 spermatozoon (all annotations which use CV term, excluding "NOT" statements)     431   1145    111    116
     spermatozoon | absent      70       --       8     48
     spermatozoon | absent | decreased number       1       --       1       --
     spermatozoon | decreased number      24       --       6     13
     spermatozoon | decreased number | germline clone       1       --       1       --
     spermatozoon | ectopic       1       --       --       --
     spermatozoon | heat sensitive       2       --       --       --
     spermatozoon | increased number       1       --       --       --
     spermatozoon | progressive       2       --       --       --
     spermatozoon | temperature conditional       2       --       --       1
Spanning Tree (Parents/Children)
Only view relationship:
germline cell
 |__gamete_______________________
 |__male germline cell___________|
male-specific anatomical entity  |
 |__male germline cell___________|
                                 spermatozoon  1803 rec.
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Is a gamete
male germline cell
Develops from individualization stage spermatid
Part of testis
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Synonyms
  • "sperm" EXACT
Secondary IDs
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CL:0000019