Questions tagged [blood-group]

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1answer
43k views

Why can blood group O be given to all blood groups?

The blood of persons of blood group O contains antibodies against antigens A and B. The red blood cells of persons of blood group A have A antigen on their surface. If someone with blood group A ...
5
votes
1answer
219 views

Any evolutionary explanation for human blood groups?

What is the explanation of people having blood types from an evolutionary perspective?
3
votes
2answers
2k views

Pregnancy from two parents with incompatible blood types, can it lead to complications?

Let's take Alice and Bob, both healthy adult human specimens. Alice is (A-). Bob is (B+). If they decide to have a child, would Alice's pregnancy involve any additional risk or complications ...