Blood group of an individual is controlled by
Answers
1 Shape of RBC
2 Shape of WBC
3 Genes
4 Hemoglobin
Answer:
Blood group of an individual is controlled by genes with variable types of alleles present on the surface of red blood cells.
Explanation:
Recently International Society of Blood Transfusion has recognized 33 blood group systems. The term “blood group” is used for the entire blood group system comprising of red blood cell (RBC) antigens whose specificity is controlled by a series of allelic or linked genes on the same chromosome. Presently, International Society of Blood Transfusion has listed more than 300 antigens to represent 33 blood group systems. Most popular ABO blood group system was discovered by Karl Landsteiner in 1900.
Among the 33 blood group systems, ABO system remains the most important in blood transfusion and transplantation because any person above the age of 6 months possess clinically significant anti-A and/or anti-B antibodies in their serum. In any individual, blood group A contains antibody against blood group B in serum and vice-versa, while blood group O contains no A/B antigen but both their antibodies in serum.