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Question

(A) The $Rh$ factor is an antigen found on the surface of red blood cells. If a person with $Rh^-$ blood receives blood from an $Rh^+$ donor,the recip

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$X$ is $Rh^+$ and $Y$ is $Rh^-$

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(A) The $Rh$ factor is an antigen found on the surface of red blood cells. If a person with $Rh^-$ blood receives blood from an $Rh^+$ donor,the recipient's immune system recognizes the $Rh$ antigen as foreign. This triggers the production of anti-$Rh$ antibodies in the recipient. These antibodies react with the donor's $Rh^+$ red blood cells,causing them to clump together,a process known as agglutination. Therefore,$X$ being $Rh^+$ and $Y$ being $Rh^-$ leads to this incompatibility.

Even though a donor $X$ and a recipient $Y$ belong to the same blood group,transfusion of blood leads to agglutination. This is because

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