FB2026_03 , released September 17, 2026

CV Term Report

Help Close All Open All

General Information

Term

posterior head segmentation

ID (Ontology)

GO:0035289 (Gene Ontology)

Definition

Partitioning the posterior region of the insect head anlage into gnathal (mandibular, maxillary and labial) segments. Unlike the anterior head (procephalic) segments, formation of the posterior head (gnathal) segments occurs by a similar mechanism to trunk segmentation, where a cascade of gap genes, pair-rule genes and segment-polarity genes subdivide the embryo into progressively smaller domains.[ PubMed:15382136 ]

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

Results list data from multiple species. Choose a record type above to open its HitList.

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
posterior head segmentation (all annotations which use CV term, excluding "NOT" statements)
involved_in \| posterior head segmentation

Spanning Tree (Parents/Children)

blastoderm segmentation________
pattern specification process__|
head development_______________|
                               head segmentation
                                |__posterior head segmentation  13 rec.
                                    |__specification of segmental identity, labial segment 2 rec.
                                    |__specification of segmental identity, mandibular segment
                                    |__specification of segmental identity, maxillary segment 2 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	head segmentation
Part of
Synonyms & Secondary IDs
Synonyms
	"gnathal segmentation" RELATED
Secondary IDs

External Crossreferences & Linkouts