Body Fluids And Circulation Ques 90
90. Child death may occur in the marriage between unrelated individuals
(a) $Rh^{+}$ man and $Rh^{+}$ woman
(b) $Rh^{+}$man and $Rh^{-}$woman
(c) $Rh^-$man and $Rh^-$woman
(d) $Rh^{-}$man and $Rh^{+}$woman
Show Answer
Answer : b
Hints & Solutions
(b) $Rh$ factor was discovered by Karl Landsteiner. A child of $Rh^{+}$ man will be $Rh^{+}$ whether the mother is $Rh^{+}$ or $Rh^{-}$. If the mother is $Rh^{+}$ then there will be no problem but if mother is $Rh^{-}$ so when the blood of $Rh^{+}$ child (in womb) mixes with the blood of $Rh^{-}$ mother then some antibodies in mother’s blood are formed against $Rh+$ factor which coagulate the womb blood causing death. If birth takes place then there is a possibility of child death in early years. This is known as erythroblastosis foetalis. In most cases the Ist pregnancy may succeed but after that it fails.
BETA
