OMIA:000137 : Blood group system R

Categories: Haematopoietic system phene

Cross-species summary: Each blood group system consists of a set of blood types, each of which corresponds to a particular antigen (usually a glycoprotein) on the surface of red blood cells. The different types within a system are the result of the action of different alleles at a locus that usually encodes an enzyme that catalyses the creation of the feature of the glycoprotein unique to that type, e.g. the presence of a particular sugar at the end of a short chain of sugars.

Species in which this phene is found:
aoudad (Ammotragus lervia)
goat (Capra hircus)
mouflon (Ovis aries musimon)
sheep (Ovis aries)

Edit History


  • Created by Frank Nicholas on 03 May 2005
  • Changed by Imke Tammen2 on 18 Mar 2022