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laila [671]
3 years ago
10

Three alleles (alternative versions of a gene) a, b, and o determine the 4 blood types

Biology
1 answer:
Oxana [17]3 years ago
5 0
A
B
AB
O

unless you're asking for specifics, like O+ and such, but I think you just wanted the main four, so there you go. hope this helps, but I may be wrong ^^
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