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Mrrafil [7]
3 years ago
14

All the alleles for type A antigen

Biology
1 answer:
olchik [2.2K]3 years ago
8 0

There are three antigens in the ABO blood group system, A, B and H. The ABO gene is located on chromosome 9 and has three alleles, A, B and O. The A allele encodes a glycosyltransferase that adds N-acetylgalactosamine to the glycoprotein H antigen that is expressed on all normal red cells.

Hope this helps:)

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