Q. The possibility of erythroblastosis foetalis occurring during the second pregnancy is when
A) The baby is $Rh^{+}and\ mother\ Rh^{-}$
B) The baby $and\ mother\ are\ Rh^{+}$
C) The baby $and\ mother\ are\ \ Rh^{-}$
D) The baby is $Rh^{-}and\ mother\ {Rh}^{+}$
Explanation
In first pregnancy, $Rh^{+}$blood from the foetus enters the circulation of an $Rh^{-}$mother, antibodies against the Rh antigen will be made.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.