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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 establishment, maintenance and elaboration of an axis in the oocyte. An example of this is found in Drosophila melanogaster. The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult). The establishment, maintenance and elaboration of the left/right axis. The left/right axis is defined by a line that runs orthogonal to both the anterior/posterior and dorsal/ventral axes. Each side is defined from the viewpoint of the organism rather of the observer (as per anatomical axes). The establishment, maintenance and elaboration of the adaxial / abaxial axis. Adaxial refers to being situated toward an axis of an anatomical structure. Abaxial refers to being situated away from an axis of an anatomical structure. The process that determines the orientation of an anatomical structure with reference to an axis. The establishment, maintenance and elaboration of an axis that initiates at a point and radiates outward from the point. The establishment, maintenance and elaboration of the dorsal/ventral axis. The dorsal/ventral axis is defined by a line that runs orthogonal to both the anterior/posterior and left/right axes. The dorsal end is defined by the upper or back side of an organism. The ventral end is defined by the lower or front side of an organism. The pattern specification process by which the polarity of a body or organ axis is established and maintained. A biological process whose specific outcome is the progression of an integrated living unit: an anatomical structure (which may be a subcellular structure, cell, tissue, or organ), or organism over time from an initial condition to a later condition. The establishment, maintenance and elaboration of a pattern along a line or a point in an embryo. 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 proximal/distal axis. The proximal/distal axis is defined by a line that runs from main body (proximal end) of an organism outward (distal end). The establishment, maintenance and elaboration of the centrolateral axis. In plants, this axis is duplicated and runs from the midrib to the margin of the leaf. The establishment, maintenance and elaboration of the columnar cartilage along the axis of a long bone that contributes to bone growth. Polarization of the follicle cells of an insect ovary along the anterior/posterior axis.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: axis specification
Acc: GO:0009798
Aspect: Biological Process
Desc: The establishment, maintenance and elaboration of a pattern along a line or around a point.
Synonyms:
  • axis determination
Proteins in PDR annotated with:
   This term: 20 [Search]
   Term or descendants: 425 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0009798 - axis specification (interactive image map)
YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle