FB2026_03 , released September 17, 2026
CV Term Report
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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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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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 Alleles Genes Insertions Constructs
 gonadal sheath proper primordium (all annotations which use CV term, excluding "NOT" statements)
     gonadal sheath proper primordium | ectopic
      --       --
     gonadal sheath proper primordium | embryonic stage
      --       --       --
     gonadal sheath proper primordium | embryonic stage 13
      --       --       --
     gonadal sheath proper primordium | female
      --
     gonadal sheath proper primordium | first instar larval stage
      --       --       --
     gonadal sheath proper primordium | male
      --       --
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embryo
 |__developing embryonic structure______
 |__dorsal closure embryo_______________|
developing material anatomical entity   |
 |__developing embryonic structure______|
 |__primordium__________________________|
trunk mesoderm derivative               |
 |__somatic trunk mesoderm derivative___|
 |__visceral trunk mesoderm derivative__|
                                        gonadal sheath proper primordium  115 rec.
                                         |__male-specific somatic gonadal precursor cell
                                         |__somatic gonadal precursor cell 1 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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