If the foetus is Rh^+ and the mother is Rh^-, | vedclass

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(A) The $Rh$ factor causes erythroblastosis foetalis. When an $Rh^-$ woman marries an $Rh^+$ man,the first child (if $Rh^+$) is usually safe because t

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Foetus will transmit antigen to mother's blood at the time of birth.

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(A) The $Rh$ factor causes erythroblastosis foetalis. When an $Rh^-$ woman marries an $Rh^+$ man,the first child (if $Rh^+$) is usually safe because the mother's blood is exposed to the foetal $Rh$ antigens only during the delivery of the first child.During this process,the mother's immune system develops antibodies against the $Rh$ antigen.In subsequent pregnancies,these $Rh$ antibodies can cross the placenta and destroy the foetal red blood cells,leading to severe anaemia or jaundice in the foetus.

If the foetus is $Rh^+$ and the mother is $Rh^-$,then:

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