Question
Erythroblastosis fetalis is caused when:
Rh– female & Rh+ male
Rh+ female & Rh– male
Rh+ female & Rh+ male
Rh– female & Rh– male
According to the sources, erythroblastosis fetalis is caused by a specific type of Rh incompatibility between an Rh-negative mother and an Rh-positive foetus . While the blood of the mother and foetus are well separated by the placenta during the first pregnancy, exposure can occur during the delivery of the first child . This causes the mother to prepare antibodies against the Rh antigen in her blood . In subsequent pregnancies, these maternal antibodies can leak into the foetal blood (if the foetus is Rh-positive, often inherited from an Rh-positive father) and destroy the foetal RBCs, leading to severe anaemia, jaundice, or death . This condition can be prevented by administering anti-Rh antibodies to the mother immediately after the first delivery . Mastering these physiological mechanisms is a high-priority strategy, as NCERT textbooks serve as the primary source for approximately 95% of NEET Biology questions .
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Body Fluids and Circulation. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
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