JCECE Medical JCECE Medical Solved Paper-2002

  • question_answer
    A test-cross distinguishes between:

    A)  a homozygous dominant and the heterozygous form

    B)  a homozygous  recessive  and  the heterozygous form

    C)  two homozygous form

    D)  two heterozygous form

    Correct Answer: A

    Solution :

     Test cross is a cross in which\[{{\text{F}}_{\text{1}}}\]dominant is crossed with recessive parent in order to know whether the dominant trait is homozygous (both alleles dominant) or heterozygous (one allele dominant and other recessive). The ratio of dominant and recessive will be 1:1 in monohybrids test cross.


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