FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term head segmentation ID (Ontology) GO:0035287 (Gene Ontology)
Definition Partitioning the insect head anlage into a fixed number of segmental units. The number of segments composing the insect head has long been a subject of debate, but it is generally agreed that there are 6 or 7 segments. From anterior to posterior the head segments are the procephalic segments (labral, (ocular), antennal and intercalary) and the gnathal segments (mandibular, maxillary and labial).[ PubMed:10477305 PubMed:7915837 ]
Comment
Links to External Ontologies
  QuickGO data     AmiGO data
Annotations
Records annotated with this term OR any of its CHILD TERMS
    Results list data from multiple species. Click on a button above and use the 'Filter by species' options on the resulting HitList to retrieve species-specific data.
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Genes (FBgn)  GO_BIOLOGICAL_PROCESS       1
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Genes
 head segmentation (all annotations which use CV term, excluding "NOT" statements)       1
     involved_in | head segmentation       1
Spanning Tree (Parents/Children)
Only view relationship: 
multicellular organism development
 |__pattern specification process__
embryonic pattern specification    |
 |__blastoderm segmentation________|
multicellular organismal process   |
 |__pattern specification process__|
segmentation                       |
 |__blastoderm segmentation________|
anatomical structure development   |
 |__head development_______________|
                                   head segmentation  21 rec.
                                    |__anterior head segmentation 8 rec.
                                    |   |__specification of segmental identity, antennal segment 2 rec.
                                    |   |__specification of segmental identity, intercalary segment 1 rec.
                                    |__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.
                                    |__specification of segmental identity, head 11 rec.
                                        |__specification of segmental identity, antennal segment 2 rec.
                                        |__specification of segmental identity, intercalary segment 1 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
hide Relationships
Is a pattern specification process
Part of blastoderm segmentation
head development
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts