Ncert Exercises & Solutions

41. Explain different types of blood groups and donor compatibility by making a table.

There are more than 30 antigens on the surface of blood cells that give rise to different blood groups.

ABO Grouping ABO grouping is based on the presence or absence of two surface antigens on the RBCs namely. A and B. The plasma of different individuals contain two natural antibodies. The distribution of antigen and antibody in the four groups of blood, A, AB, B and O are explained above in the table.

Human ABO Blood Groups and their Compatibility

Blood Group

Genotype

Antigens on Red Blood Corpuscles

Antibodies in Blood Plasma

Donor

Receipient

I^AI^A or I^AI^O

I^BI^B or I^BI^O

I^AI^B

I^OI^O

None

a, b

A, AB

B, AB

AB, A, B, O

A, O

B, O

AB, A, B, O

From the above table it is evident that group ‘O’ blood can be donated to persons with any other blood group and hence 'O' group individuals are called ‘Universal donors’. Person with ‘AB’ blood can accept blood fram persons with AB, as well as the other groups of blood. Therefore, such persons are called ‘Universal recipients’.

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