FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
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

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Direct annotations: records annotated with this exact term (child terms are NOT included)
Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 spermatozoon (all annotations which use CV term, excluding "NOT" statements)
     spermatozoon | absent
      --
     spermatozoon | absent | decreased number
      --
      --
     spermatozoon | decreased number
      --
     spermatozoon | decreased number | germline clone
      --
      --
     spermatozoon | ectopic
      --       --       --
     spermatozoon | heat sensitive
      --       --       --
     spermatozoon | increased number
      --       --       --
     spermatozoon | progressive
      --       --       --
     spermatozoon | temperature conditional
      --       --
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adult
 |__testis_______________________
gonad                            |
 |__testis_______________________|
 |__gamete_______________________|
germline cell                    |
 |__gamete_______________________|
 |__male germline cell___________|
male reproductive system         |
 |__testis_______________________|
male-specific anatomical entity  |
 |__testis_______________________|
 |__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