Blood type O when A or B blood type
expected; these individuals are recessive for H allele and do
not make H antigen; H antigen
required as precursor for A or B
antigen to
be expressed. First
described in Bombay; explains a child with O blood type when a parent is
e.g. AB blood type; rare
phenotype, more common in
consanguineous matings.
expected; these individuals are recessive for H allele and do
not make H antigen; H antigen
required as precursor for A or B
antigen to
be expressed. First
described in Bombay; explains a child with O blood type when a parent is
e.g. AB blood type; rare
phenotype, more common in
consanguineous matings.
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