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Question

Biological marriage of one of the following should be avoided
or

After examining the blood groups of a couple, the doctor advised them not to have more than one child. The blood group of the couple are likely to be

or

In which of the following situations, is there a risk factor for children of incurring erythroblastosis foetalis


A
Rh+ male and Rh- female
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B
Rh+ male and Rh+ female
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C
Rh- male and Rh+ female
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D
Rh- male and Rh- female
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Solution

The correct option is A Rh+ male and Rh- female
The correct option is A.
Erythroblastosis fetalis results from Rh(D) incompatibility, which may develop when a woman with Rh-negative blood is impregnated by a man with Rh-positive blood and conceives a fetus with Rh-positive blood, which during second pregnancy may result in erythroblastosis fetalis if necessary precautions are not taken.

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