Aba Blood Groups As Racial Criteria

Erythroblastosis foetalis is a condition that occurs when there is an incompatibility between the blood types of the mother and the foetus. The most common cause is Rh incompatibility, where the mother is Rh-negative, and the foetus is Rh-positive. The mother's immune system produces antibodies against the Rh-positive blood cells of the foetus, leading to the destruction of the foetal red blood cells. This condition can lead to severe anaemia and jaundice in the newborn.
Step 1: Understanding the causes of erythroblastosis foetalis.
- ABO Incompatibility is not a common cause of erythroblastosis foetalis, though it can occur in some cases, it is usually less severe.
- Rh Incompatibility is the primary cause of erythroblastosis foetalis and occurs when the mother is Rh-negative and the foetus is Rh-positive.
- MNS Incompatibility is a rare cause and not associated with erythroblastosis foetalis.
- Bombay blood group Incompatibility is also not a common cause of this condition.
Final Answer:

Step 1: Understanding the Blood Group Systems and Discoverers.
- AB Blood Type (A): This blood type is discovered by Landsteiner and Levine, and they also discovered the ABO blood system.
- Rh Blood Group System (B): The Rh system, which includes the Rh factor, is known for its universal donor (O-negative blood type) characteristic.
- MN Blood Group System (C): The MN blood group system has two major antigens, M and N, discovered by Landsteiner and Weiner.
- O Blood Type (D): O blood type is the universal donor, with no antigens on the surface of red blood cells.
Step 2: Matching the Correct Pairs.
- (A) AB Blood Type matches with (I) Landsteiner and Levine.
- (B) Rh Blood Group System matches with (II) Universal donor.
- (C) MN Blood Group System matches with (III) Universal Recipients.
- (D) O Blood Type matches with (IV) Landsteiner and Weiner.
Step 3: Conclusion.
The correct matching is (A) - (I), (B) - (II), (C) - (III), (D) - (IV).
Final Answer: