AMU Medical AMU Solved Paper-2009

  • question_answer
    A dihybrid for qualitative trait is crossed with homozygous recessive individual of its type, the phenotypic ratio is

    A)  1 : 2 : 1                                

    B)  3 : 1

    C)  1 : 1 : 1 : 1                           

    D)  9 : 3 : 3 : 1

    Correct Answer: C

    Solution :

                     When the \[{{F}_{1}}\] individuals are crossed with its pure recessive parent, the cross is called test cross. The result of it, is always 1 : 1 in monohybrid cross and 1 : 1 : 1 : 1 in dihydrid cross.


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