Biology · Variation and Genetics

When an Rh-negative woman is married to an Rh-positive man and conceives a Rh-positive child, there can be a potential for maternal-fetal incompatibility. This occurs when the Rh-positive antigens from the fetus enters the bloodstream of the Rh-negative mother during pregnancy or childbirth. The mother's immune system may recognize the Rh-positive antigens as foreign and produce antibodies against them. These antibodies can cross the placenta and attack the red blood cells of the Rh-positive fetus, leading to various complications.

When an Rh-negative woman is married to an Rh-positive man and conceives a Rh-positive child, there can be a potential for maternal-fetal incompatibility. This occurs when the Rh-positive antigens from the fetus enters the bloodstream of the Rh-negative mother during pregnancy or childbirth. The mother's immune system may recognize the Rh-positive antigens as foreign and produce antibodies against them. These antibodies can cross the placenta and attack the red blood cells of the Rh-positive fetus, leading to various complications.

This option is not correct. Paternal-fetal incompatibility typically refers to situations where there is a mismatch or conflict between the father's antigens and the fetal antigens, which can occur in conditions such as ABO blood group incompatibility.

The Rh factor incompatibility does not cause cancer in the fetus. It primarily affects the blood cells, leading to a condition called hemolytic disease of the newborn (HDN) or erythroblastosis fetalis, which involves the destruction of fetal red blood cells.

Maternal complications can rise from Rh incompatibility, such as anemia, jaundice, or HDN, death of the mother is not a typical outcome.