| Direction Read the following and answer the questions from given below In court, a woman of AB blood group claims that a man of O blood group is the father of her son having O blood group. The judge orders to take the help of a geneticist to solve the problem. Finally, it was concluded that man of O blood group was not the father of woman's son. |
| (iv) Out of the three alleles of gene I, the sugar polymers on the plasma membrane of RBCs is controlled by how many alleles? |
A) All three
B) Two
C) One
D) Zero
Correct Answer: B
Solution :
[b] The plasma membrane of the RBC has sugar polymers that protrude from its surface and the kind of sugar is controlled by T gene. It has three alleles, \[{{I}^{A}}\], \[{{I}^{B}}\]and i. Out of these only two alleles \[{{I}^{A}}\] and \[{{I}^{B}}\] produce a slightly different form of the sugar, while allele 'i' does not produce any sugar.
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