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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2011

  • question_answer
    In a tyical Mendelian cross, which is a dihybrid cross, one parent is homozygous for both dominant traits and another parent is homozygous for both recessive traits. In the F2 generation, both parental combinations and recombinations appear. The phenotypic ratio of parental combinations to recombinations is

    A)  10 : 6

    B)  12 : 4

    C)  9 : 7

    D)  15 : 1

    Correct Answer: A

    Solution :

    A cross of round yellow seeds (both dominant) and green wrinkled seed (both recessive) plants produced 9:3:3:1 ratio of plants (phenotypic) in \[{{F}_{2}}\] generation. The ratio of parental to recombinant is 10 : 6 here because the 9 and 1 are of parental type and 3 & 3 are recombinant.


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