Answer :
Final answer:
Blood types are determined by the presence or absence of antigens, influencing compatibility in medical practices. ABO blood group system plays a crucial role in blood transfusions and organ transplants.
Explanation:
Blood types are a genetic characteristic determined by the presence or absence of antigens on red blood cells. The ABO blood group system includes different alleles (A, B, and O) leading to various genotypes and phenotypes influencing blood type compatibility in medical practices such as blood transfusions and organ transplants. For example, individuals with type O blood are considered universal donors, while those with type AB are universal recipients.
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