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Describe the mechanism of pattern of inh...

Describe the mechanism of pattern of inheritance of ABO blood groups in humans.

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### Step-by-Step Solution: 1. **Understanding ABO Blood Groups**: The ABO blood group system is determined by the presence of specific antigens on the surface of red blood cells (RBCs). The two main types of antigens involved are A and B. 2. **Alleles Involved**: The ABO blood group is controlled by three different alleles: - **IA**: Produces A antigen - **IB**: Produces B antigen - **i**: Produces no antigen (recessive) ...
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(a) List the three different allelic forms of gene 'I' in humans. Explain the different phenotypic expressions, controlled by these three forms. (b) A woman with blood group 'A marries a man with blood group 'O'. Discuss the possibilities of the inheritance of the blood groups in the following starting with "yes" or "no" for each: (i) They produce children with blood group "A" only. (ii) They produce children some with "O" blood group and some with "A" blood group.

(a) List the three different allelic forms of gene 'I' in humans. Explain the different phenotypic expressions, controlled by these three forms. (b) A woman with blood group 'A marries a man with blood group 'O'. Discuss the possibilities of the inheritance of the blood groups in the following starting with "yes" or "no" for each: (i) They produce children with blood group "A" only. (ii) They produce children some with "O" blood group and some with "A" blood group.

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