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.

Front

What is the genotype for type A blood?

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The genotype for type A blood can be either I^A I^A (homozygous) or I^A i (heterozygous).

Front

What is the genotype for type B blood?

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The genotype for type B blood can be either I^B I^B (homozygous) or I^B i (heterozygous).

Front

What is the genotype for type AB blood?

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The genotype for type AB blood is I^A I^B, meaning both A and B antigens are present.

Front

If both parents have type AB blood, what blood types can their children have?

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If both parents have type AB blood, their children can only have type A or type B blood.

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

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No, a person with type AB blood cannot have a parent with type O blood, as type O does not carry A or B antigens.

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What blood types can a type O parent and a type AB parent produce?

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A type O parent and a type AB parent can produce children with blood types A and B.

Front

What is the probability of a child having type O blood if one parent is type AB and the other is type O?

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The probability is 0%, as type O blood cannot be produced from an AB parent.

Front

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 presence of A and B antigens.