FB2026_02 , released June 18, 2026

CV Term Report

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General Information

Term

achiasmate meiosis I

ID (Ontology)

GO:0000705 (Gene Ontology)

Definition

The first division of meiosis in which homologous chromosomes are paired and segregated from each other, occurring in the constitutive absence of chiasmata.[ PubMed:10690419 ]

Also Known As

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

Spanning Tree (Parents/Children)

meiosis I cell cycle process
meiotic nuclear division__
                          meiosis I cell cycle process
                           |__meiosis I
                               |__achiasmate meiosis I  3 rec.
                          meiosis I(+) 83 rec.
                           |__achiasmate meiosis I  3 rec.

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

External Crossreferences & Linkouts