FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

male meiosis I

ID (Ontology)

GO:0007141 (Gene Ontology)

Definition

A cell cycle process comprising the steps by which a cell progresses through male meiosis I, the first meiotic division in the male germline.

Also Known As

"male meiosis I nuclear division"

Comment

Links to External Ontologies

QuickGO data AmiGO data

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 Class	Field	Direct annotations
Genes (FBgn)	GO_BIOLOGICAL_PROCESS

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
male meiosis I (all annotations which use CV term, excluding "NOT" statements)
acts_upstream_of_positive_effect \| male meiosis I
involved_in \| male meiosis I

Spanning Tree (Parents/Children)

male gamete generation
 |__male meiotic nuclear division__
meiosis I cell cycle process       |
 |__meiosis I______________________|
meiotic nuclear division           |
 |__meiosis I______________________|
 |__male meiotic nuclear division__|
                                   male meiosis I  11 rec.
                                    |__spindle assembly involved in male meiosis I 1 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	meiosis I male meiotic nuclear division
Part of
Synonyms & Secondary IDs
Synonyms
	"male meiosis I nuclear division" EXACT
Secondary IDs

External Crossreferences & Linkouts