Xg^a

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Xg^a

antigen

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Xg blood group system

In Xg blood group system
…consists of one identifiable antigen, Xg^a; two phenotypes, Xg(a+) and Xg(a−); and a pair of alleles, Xg^a, which is dominant to Xg. This blood group follows the pattern for sex-chromosome inheritance: daughters may receive a gene for Xg^a from either the mother or the father, but sons may only inherit…
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