Bombay blood type

Bom·bay blood type

(bom-bā' blŭd tīp) Blood type of those who possess the genes for A and B antigens but are unable to express the genes because they lack the gene for H antigen, a required precursor of A and B. People with this blood type frequently have anti-H in their blood.

Fig. 76 Bombay blood type . (a) Normal and (b) Bombay blood group types.

Bombay blood type

a rare blood type in which individuals appear to be Group O (see ABO BLOOD GROUP) and yet can produce offspring of a type normally impossible for a Group O parent. It appears that Bombay types are homozygous (see HOMOZYGOTE) for a pair of recessive h alleles that inactivates the production of the ABO blood group antigen, even though they have the genes to manufacture these antigens, a form of EPISTASIS.

单词	bombay blood type
释义	Bombay blood type Bom·bay blood type (bom-bā' blŭd tīp) Blood type of those who possess the genes for A and B antigens but are unable to express the genes because they lack the gene for H antigen, a required precursor of A and B. People with this blood type frequently have anti-H in their blood. Fig. 76 Bombay blood type . (a) Normal and (b) Bombay blood group types. Bombay blood type a rare blood type in which individuals appear to be Group O (see ABO BLOOD GROUP) and yet can produce offspring of a type normally impossible for a Group O parent. It appears that Bombay types are homozygous (see HOMOZYGOTE) for a pair of recessive h alleles that inactivates the production of the ABO blood group antigen, even though they have the genes to manufacture these antigens, a form of EPISTASIS.
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