ABO Blood Group System questions with correct answers

ABO Blood Group System - Answer Marked the beginning of the concept of individual uniqueness defined by RBC antigens in the RBC membrane. The most important of all blood group system in which individuals predictably have antibodies in their serum to antigens that are absent on the RBC membrane. (Occurs without any exposure to RBCs by transfusion or pregnancy) Transfusion of an incompatible ABO type can result in the almost immediate lysis of donor RBCs (due to presence of antibodies) Dr. Karl Landsteiner - Answer Discovered the ABO blood group system A. Decastrello and A. Sturli - Answer Identified the 4th blood group (AB) in 1902 Bernstein - Answer Postulated the experience of 3 allelic genes. (A,B,O) in 1924. Thompson - Answer Proposed a 4-allele theory inheritance, encompassing the 4 allelic genes (A1, A2, B, O) Reciprocal Relationship - Answer This is the relationship between forward and reverse testing.