FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

primary spermatocyte in meiotic telophase I

ID (Ontology)

FBbt:00057148 (Fly Anatomy)

Definition

Primary spermatocyte during meiotic telophase 1 (GO:0007134). In early telophase the daughter nucleus forms within the karyoplasm and the remnants of karyoplasmic structures. At late telophase, two nuclear membranes have formed around the nucleus of the future secondary spermatocyte, the parafusorial or paranuclear membranes (three to five layers of double membranes) have dissolved and the cell wall has thickened at the site of maximal invagination.[ FlyBase:FBrf0064778 ]

Comment

Make into XP once OBO:rel 'during' is legal.

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)

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Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Genes	Constructs
primary spermatocyte in meiotic telophase I (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

  primary spermatocyte
   |__meiotic primary spermatocyte
       |__primary spermatocyte in meiotic telophase I  3 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	meiotic primary spermatocyte
Develops from	primary spermatocyte in meiotic anaphase I
Part of
Synonyms & Secondary IDs
Synonyms
	"primary spermatocyte during early telophase of the first meiotic division" NARROW[ FlyBase:FBrf0064778 ] "primary spermatocyte during late telophase of the first meiotic division" NARROW[ FlyBase:FBrf0064778 ]
Secondary IDs

External Crossreferences & Linkouts