Question

ABO blood groups in human are controlled by gene 1.It has three alleles -IA,IB,i .Since there are three different alleles,six different genotypes are possible . How many phenotypes can occur???,​

Answer 1

Answer:

ABO blood groups in humans are controlled by the gene I. It has three alleles-IA, IB and i. Since there are three different alleles, six different genotypes are possible. There are four phenotypes possible because humans are diploid and can have any two alleles at one time. Also, IA and IB when present together shows co-dominance, resulting in AB type and when they are present with I, they show dominance.

Hence, the correct answer is ‘Four’

Answer 2

Answer:

ABO/D Compatibility

Individuals naturally have antibodies against the ABO groups they do not carry (i.e., group O individuals have anti-A and anti-B, group A individuals have anti-B, group B individuals have anti-A, and group AB individuals havenone). RBC components must be major ABO compatible and usually D compatible. Group O is the universal RBC component because the RBCs carry no A or B group antigens, whereas group AB RBCs can only be transfused to group AB individuals, group A RBCs can only be transfused to group A or AB individuals, and group B RBCs can only be transfused to group B or AB individuals. Incompatible RBC transfusions may result in acute hemolytic transfusion reactions.

Explanation:

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