Question

Apes share …………. blood groups with the man.
A) A,B,AB
B) A,B,O
C) AB, O
D) A and B

Answer 1

ABO blood group is due to the presence or absence of surface antigen on RBCs. Only $2.5\%$ of DNA differs in man and apes. these two are closely related and have similar blood proteins and blood groups.

Complete answer: ABO blood grouping is based on the presence or absence of the two antigens A and B on the surface of RBCs. These two (Apes and man) are closely related and have similar blood proteins and blood groups.
Persons with blood group A have antigen A on the surface of RBCs and antibody B in the plasma, similarly, the person with blood group B have antigen B on the surface of RBCs and antibody A in the plasma. Following table shows different types of blood group in humans:

BLOOD GROUP	Antigens on RBCs	In Plasma	Donors Group
A	A	anti - B	A, O
B	B	anti - A	B, O
AB	A, B	nil	AB,A,B,O
O	nil	anti - A,B	O

O blood group can be donated to a person with any other blood group and hence O group individuals are universal donors and persons with AB group are universal recipients.
Apes and humans have similar blood proteins, blood cells, and similar types of blood groups (A and B).
There is a $2.5\%$ difference between DNA of man and chimpanzee and $10\%$ difference between DNA of man and monkey. These results show that man is more closely related to apes than to monkeys.
So, the correct answer is option D. A and B.

Note: Another antigen, the Rh antigen is found on the RBCs surface, such persons are Rh-positive while those without this antigen are Rh-negative.