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Bot GPT 3.5 The inheritance pattern of human blood type is determined by the ABO system. This system involves the presence or absence of certain antigens on the surface of red blood cells.
There are four blood types in the ABO system: A, B, AB, and O. These blood types are determined by the presence or absence of antigens A and B on the red blood cells.
The inheritance pattern of blood types follows both co-dominance and simple dominance. The IA and IB alleles for blood types A and B are co-dominant, meaning that if an individual inherits both IA and IB alleles, they will have blood type AB. The IA and IB alleles are dominant over the i allele, which represents the absence of A or B antigens and determines blood type O.
The A, B, and O blood types can be inherited as follows:
- Type A blood: This can be inherited in three ways: AA (homozygous dominant), AO (heterozygous), and OA (heterozygous). Both AA and AO individuals have blood type A.
- Type B blood: This can also be inherited in three ways: BB (homozygous dominant), BO (heterozygous), and OB (heterozygous). Both BB and BO individuals have blood type B.
- Type AB blood: This can only be inherited in one way, which is through the co-dominance of the IA and IB alleles. Individuals with blood type AB have both A and B antigens on their red blood cells.
- Type O blood: This can be inherited in two ways: OO (homozygous recessive) and Oi (heterozygous). Both OO and Oi individuals have blood type O.
The inheritance of the blood type system follows Mendelian genetics principles, with the A and B alleles being dominant over the i allele. However, the co-dominance of the IA and IB alleles for blood type AB adds an additional complexity to the inheritance pattern.