Food diet for blood type o negative3/28/2024 Mutations to the original type A gene that followed then caused types B and O to appear. Scientists have determined that most likely, blood type A came first. The theories are all different, thus providing no definitive answer. Tracing the evolution of blood type groups can be difficult as there are multiple theories surrounding the progression of blood type science. However, more recent research shows there are several alterations that can neutralize either an A or B gene and “transform” them into O. 1 Blood group O is presumed to be the original blood type of all humans. ![]() D ‘Adamo, blood types evolved over time to ensure human adaptation and survival of the species. Detailed charts like this one allow someone to trace the origin of their blood type back to their parents for the purposes of understanding their risk of disease and other factors.Īccording to Dr. Blood classified as “negative” does not contain the Rhesus factor, just as blood type O does not contain an A or B antigen.īlood type is inherited and passed down genetically from our parents. If you’re an Rh-negative blood type, this means you don’t have an antigen - called antigen D - on the surface of your red blood cells. Rh, or Rhesus factor, classifies a blood type into “positive” or “negative” categories. Therefore, blood type O is the “universal” blood donor - if they are also “Rh-negative.” AB blood types have both antigens on red blood cell surfaces, while blood type O has no antigens. Red blood cells will contain antigen A or B.
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