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NEET 2009
Exam
NEET
Year
2009
Subject
Zoology
Chapter
Body Fluids and Circulation

NEET 2009 · Zoology · Body Fluids and Circulation

The most popularly known blood grouping is the ABO grouping. It is...

The most popularly known blood grouping is the ABO\mathrm{ABO} grouping. It is named ABO\mathrm{ABO} and not ABCA B C, because ' OO ' in it refers to having

Options

  1. Aother antigens besides A and B on RBCs
  2. Bover dominance of this type on the genes for A and BB types
  3. Cone antibody only-either anti-A or anti-B on the RBCs
  4. Dno antigens AA and BB on RBCs

Correct answer

D. no antigens AA and BB on RBCs

Step-by-step solution

Landsteiner divided human population into four groups based on the presence of antigens found in their RBCs. Each group represented a blood group. Thus, there are four types of blood groups A, B, AB and O. Blood group ' OO ' does not contain any antigen on RBCs, hence can be given to any person, that's why this blood group is called universal donor.
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