FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term gonadal sheath proper primordium ID (Ontology) FBbt:00005473 (Fly Anatomy)
Definition The primordium of the gonadal sheath. This arises from clusters of cells in parasegments 10, 11 and 12 of the dorsal branch of the fat body/gonad primordium which split off during stage 14 and then cluster around the germ cells.[ FlyBase:FBrf0092473 ]
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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      79
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       3
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      13
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Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 gonadal sheath proper primordium (all annotations which use CV term, excluding "NOT" statements)      80     15      4     15
     gonadal sheath proper primordium | ectopic       3       --       --       3
     gonadal sheath proper primordium | embryonic stage      32       --       --       --
     gonadal sheath proper primordium | embryonic stage 13       1       --       --       --
     gonadal sheath proper primordium | female       8       --       1      2
     gonadal sheath proper primordium | first instar larval stage       2       --       --       --
     gonadal sheath proper primordium | male       7       --       --       3
Spanning Tree (Parents/Children)
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developing material anatomical entity
 |__developing embryonic structure______
 |__primordium__________________________|
trunk mesoderm derivative               |
 |__somatic trunk mesoderm derivative___|
 |__visceral trunk mesoderm derivative__|
                                        gonadal sheath proper primordium  114 rec.
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Is a developing embryonic structure
primordium
somatic trunk mesoderm derivative
visceral trunk mesoderm derivative
Develops from fat body/gonad primordium
Part of dorsal closure embryo
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