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Any developmental process that results in the creation of defined areas or spaces within an organism to which cells respond and eventually are instructed to differentiate. The establishment, maintenance and elaboration of a pattern along a line or around a point. The developmental process pertaining to the initial formation of the primitive streak from unspecified parts. The primitive streak is a ridge of cells running along the midline of the embryo where the mesoderm ingresses. It defines the anterior-posterior axis. The pattern specification process by which an axis or axes is subdivided in space to define an area or volume in which specific patterns of cell differentiation will take place or in which cells interpret a specific environment. The regionalization process by which specific areas of cell differentiation are determined along the anterior-posterior axis. The anterior-posterior axis is defined by a line that runs from the head or mouth of an organism to the tail or opposite end of the organism. Any process that modulates the frequency, rate or extent of translation of mRNAs that contribute to the specification of the anterior/posterior axis. Any process by which mRNA is transported to, or maintained in, a specific location within the oocyte and/or syncytial embryo that contributes to the specification of the anterior/posterior axis. The establishment, maintenance and elaboration of the anterior/posterior axis. The anterior-posterior axis is defined by a line that runs from the head or mouth of an organism to the tail or opposite end of the organism. The establishment, maintenance and elaboration of the rostro-caudal axis of a somite, prior to the morphological formation of a somite boundary. Any process resulting in the establishment of polarity along the anterior/posterior axis. Polarization of the oocyte along its anterior-posterior axis. An example of this is found in Drosophila melanogaster. Any process that mediates the transfer of information from an epiblast cell to an extraembryonic ectoderm cell that contributes to the specification of the anterior/posterior axis. The specification of the anterior/posterior axis of the embryo by the products of genes expressed maternally and genes expressed in the zygote.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: anterior/posterior axis specification
Acc: GO:0009948
Aspect: Biological Process
Desc: The establishment, maintenance and elaboration of the anterior/posterior axis. The anterior-posterior axis is defined by a line that runs from the head or mouth of an organism to the tail or opposite end of the organism.
Synonyms:
  • anterior/posterior axis determination
Proteins in PDR annotated with:
   This term: 42 [Search]
   Term or descendants: 279 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0009948 - anterior/posterior axis specification (interactive image map)
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Created and Maintained by: Michael Riffle