Understanding Blood Types
* ABO Blood Group System: The ABO blood group system is based on the presence or absence of two antigens (A and B) on the surface of red blood cells.
* Alleles: Each person inherits two alleles (versions) of the gene that determines blood type, one from each parent.
* Possible Alleles: The possible alleles are:
* I^A: Codes for the A antigen.
* I^B: Codes for the B antigen.
* i: Codes for neither A nor B antigen.
* Phenotype: The actual blood type (A, B, AB, or O) is called the phenotype.
Crossing A and B Genes
When you cross an individual with an A blood type (I^A I^A or I^A i) and an individual with a B blood type (I^B I^B or I^B i), the following combinations are possible:
* I^A I^B: This results in AB blood type.
* I^A i: This results in A blood type.
* I^B i: This results in B blood type.
Summary
Crossing A and B genes can produce the following blood types in offspring:
* AB blood type
* A blood type
* B blood type
Important Note: The actual probability of each blood type will depend on the specific genotypes of the parents.
