Question

The four blood groups in human beings are A, B, AB and AO.

• A. True
• B. False

Answer 1

The correct option is B False

The scientist Karl Landsteiner identified four blood groups in the year 1900.

1. The blood group of a person with antigen Aon their RBCs is A.
2. The blood group of a person with antigen B on their RBCs is B.
3. The blood group of a person with neither antigen A nor antigen B on their RBCs is O.
4. The blood group of a person with both antigen A and antigen B on their RBCs is AB.