A) Rh' male and Rh' female?
B) Rh male and Rh' female
C) Rh' male and Rh female
D) Rh' female and Rh" male
Correct Answer: C
Solution :
Biologically marriage between Rh+ male and Rh' female is avoided because when Rh- woman become pregnant and has Rh' baby then during her first delivary Rh antigens enter the mother's blood and lead to the formation of Rh antibodies. If this woman pregnants again with Rh+ baby tiien her Rh antibodies will cross the placenta and damage the baby's red blood cells (haemolysis). This is called as hemolytic disease of newborn (HDNB).
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