FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term spermatocyte cyst ID (Ontology) FBbt:00005258 (Fly Anatomy)
Definition A male germline cyst containing 2 cyst cells surrounding 16-32 spermatocytes.
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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)  PHENOTYPE_MANIFEST_IN      22
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      17
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
 spermatocyte cyst (all annotations which use CV term, excluding "NOT" statements)      22      1      1     17
     spermatocyte cyst | germline clone       1       --       --       --
     spermatocyte cyst | spermatogenesis       2       --       --       --
     spermatocyte cyst | temperature conditional       2       --       --       1
Spanning Tree (Parents/Children)
Only view relationship: 
germline cyst____________________
male-specific anatomical entity__|
                                 male germline cyst
                                  |__spermatocyte cyst  1000 rec.
                                      |__primary spermatocyte cyst 268 rec.
                                      |   |__apolar primary spermatocyte cyst
                                      |   |__mature primary spermatocyte cyst 9 rec.
                                      |   |__polar primary spermatocyte cyst 18 rec.
                                      |__secondary spermatocyte cyst 35 rec.
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Is a male germline cyst
Develops from spermatogonial cyst
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