Question

When father and mother are $R{h}^{+}$ and $R{h}^{-}$ respectively

• A. Only sons can suffer from erythroblastosis fetalis either prior to birth or Just after birth
• B. Only daughters can suffer from erythroblastosis fetalis either prior to birth or just after birth
• C. All children born to them are normal
• D. First child born may be normal subsequent may suffer from erythroblastosis fetalis

Answer 1

The correct option is D First child born may be normal subsequent may suffer from erythroblastosis fetalis

When father and mother are Rh+ and Rh− respectively then the first progeny causes the release of certain Rh antigens in blood after which mother body forms antibody because it considers such antigen foreign hence first child born may be normal subsequent may suffer from erythroblastosis fetalis. So, the correct option is D. (First child born may be normal subsequent may suffer from erythroblastosis fetalis)