Q. If the foetus is $Rh^{+}$ and mother is $Rh^{-}$, then
A) Foetus will transmit antigen to mother blood
B) Foetus will transmit antibody to mother blood
C) Foetus is attacked by antibodies to mother blood
D) Foetus is attacked by antigen to mother blood
Explanation
The Rh factor causes erythroblastosis foetalis, when a woman who is $Rh^{-}$ marries a man, who is $Rh^{+}$ , their first child will be safe (which is $Rh^{+}$) but during pregnancy some blood of foetus and mother mixes due to which the mother develops antibodies against her foetus antigen which is $Rh^{+}.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.