Principles of Inheritance and Variation Question 75
75. Which one pair of the following parents is most likely to get a child who suffer from hemolytic disease of new born?
[2000]
(a) Rh-negative mother and Rh-positive father
(b) Rh-positive mother and Rh-negative father
(c) $Rh$-negative mother and $Rh$-negative father
(d) $Rh$-positive mother and Rh-positive father
Show Answer
Answer : a
Hints & Solution
(a) Hemolytic disease of the newborn occurs when a $Rh^{-}$mother conceives a $Rh^{+}$child. Mother’s blood starts producing antibodies against the foetal red blood cells.
