Q
What is the rarest blood type?
A
Expert Answer
AB-negative is the rarest major blood type (~1% of populations). However, hundreds of rare blood types exist beyond ABO/Rh. The 'Bombay phenotype' (hh) is extremely rare and can't receive standard O-negative blood. Rare blood registries help match donors for uncommon types.
Key Insight
AB-negative is the rarest major blood type (~1% of populations).
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