A) \[R{{h}^{+}}\] male and \[R{{h}^{-}}\] female
B) \[R{{h}^{-}}\] male and \[R{{h}^{+}}\] female
C) \[R{{h}^{+}}\] male and \[R{{h}^{-}}\] female
D) \[R{{h}^{-}}\] male and \[R{{h}^{-}}\] female
Correct Answer: A
Solution :
The Rhesus antigen may be present in the plasma of \[R{{h}^{-}}\] women who have been pregnant with \[R{{h}^{+}}\] child (having Rh antigen on their red cells)-as the mothers may become sensitized to Rh (antigen if the foetal blood leaks across the placenta during the delivery of \[R{{h}^{+}}\] baby.
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