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Q.
Which animal has its blood composition nearly the same as of man?
AMUAMU 2000
Solution:
The blood composition of man is nearly similar to rhesus monkey. There are $6$ common types of Rh antigen, each of which is known as Rh factor. They are designated as C, D, E, c, d and e. The type D antigen is widely prevalent in population. Anyone who has this type of antigen is said to be $Rh^+$, whereas a person who does not have type D antigen is said to be Rh-.