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AMU Medical AMU Solved Paper-2000

  • question_answer
    A child has the blood group 0. The possible genotypes of his parents are

    A)                  \[{{I}^{A}}{{I}^{B}}\times {{I}^{A}}{{I}^{O}}\]                    

    B)                  \[{{I}^{O}}{{I}^{O}}\times {{I}^{A}}{{I}^{A}}\]

    C)                  \[{{I}^{A}}{{I}^{B}}\times {{I}^{O}}{{I}^{O}}\]                    

    D)                  \[{{I}^{B}}{{I}^{O}}\times {{I}^{A}}{{I}^{O}}\]

    Correct Answer: D

    Solution :

    The possible genotype of his parents will be 18\[{{1}^{O}}\times {{1}^{A}}{{I}^{O}}\]. 
    SPERM O A B AB
    i i \[{{i}^{A}}\] i \[{{i}^{B}}\] \[{{i}^{A}}\] \[{{i}^{B}}\]
    O i ii O ii O \[{{i}^{A}}i\] A ii O \[{{i}^{B}}i\] B \[{{i}^{A}}i\] A \[{{i}^{B}}i\]B
    A i ii O ii O \[{{i}^{A}}i\] A ii O \[{{i}^{B}}i\] B \[{{i}^{A}}i\] A \[{{i}^{B}}i\]B
    B i ii O ii O \[{{i}^{A}}i\]A ii O \[{{i}^{B}}i\] B \[{{i}^{A}}i\]A \[{{i}^{B}}i\]B
    \[{{i}^{B}}\] \[{{i}^{B}}i\]B \[{{i}^{B}}i\]B \[{{i}^{A}}{{i}^{B}}\]AB \[{{i}^{B}}i\]B \[{{i}^{B}}i\] B \[{{i}^{A}}{{i}^{B}}\]AB \[{{i}^{B}}{{i}^{B}}\]B
    AB \[{{i}^{A}}\] \[{{i}^{A}}i\]A \[{{i}^{A}}i\]A \[{{i}^{A}}{{i}^{A}}\]A \[{{i}^{A}}i\]A \[{{i}^{A}}{{i}^{B}}\]AB \[{{i}^{A}}{{i}^{A}}\]A \[{{i}^{A}}{{i}^{B}}\]AB
    \[{{i}^{B}}\] \[{{i}^{B}}i\]B \[{{i}^{B}}i\]B \[{{i}^{A}}{{i}^{B}}\]AB \[{{i}^{B}}i\]B \[{{i}^{B}}{{i}^{B}}\]B \[{{i}^{B}}{{i}^{B}}\]AB \[{{i}^{B}}{{i}^{B}}\]B
    Chart showing inheritance of blood groups of children of various parents.


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