ABO Blood Types

Front

What are ABO blood types?

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ABO blood types are a classification of human blood based on the presence or absence of antigens (A and B) on the surface of red blood cells. The four main types are A, B, AB, and O.

Front

What is the genotype for type O blood?

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The genotype for type O blood is 'ii', meaning there are no A or B antigens present.

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What is the probability of a child having type O blood if both parents have type AB blood?

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0% - Parents with type AB blood can only pass on A or B alleles.

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What are the possible blood types of a child if one parent has type AB blood and the other has type A blood?

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The possible blood types are A, B, and AB.

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Can a person with type AB blood have a parent with type O blood?

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False - A person with type AB blood cannot have a parent with type O blood because type O does not carry A or B antigens.

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What is the probability of a child having type O blood if both parents are heterozygous for type A blood?

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25% - The possible genotypes are AA, AO, AO, and OO.

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What does it mean for a blood type to be heterozygous?

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Heterozygous means having two different alleles for a particular gene, such as having one A allele and one O allele (AO) for type A blood.

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What are antigens in the context of blood types?

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Antigens are substances on the surface of red blood cells that can trigger an immune response. In blood types, they determine the ABO classification.

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What blood type is represented by the genotype IAIB?

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The blood type represented by the genotype IAIB is AB.

Front

If a child has type A blood, what are the possible genotypes of the parents?

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The possible genotypes of the parents could be AA, AO, or a combination of A and O.