| Direction: Each of these questions contains two statements |
| Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below. |
| Assertion [A] In codominance, the \[{{F}_{1}}\]-generation resembles both the parents. |
| Reason [R] An example is different type of red blood cells that determine ABO blood grouping in humans. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false
D) A is false, but R is true
Correct Answer: A
Solution :
[a] Both A and R are true and R is the correct explanation of A. In codominance, the progeny of \[{{F}_{1}}\]-generation resembles both the parents due to the equal expression of the two alleles involved. An example of the phenomenon of codominance is ABO blood grouping in humans. In this antigen A, product of the alleles \[{{I}^{A}}\] and antigen B, product of the alleles \[{{I}^{B}}\] are codominant in individual with AB blood group.
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