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NEET Biology Principle Of Inheritance And Variation Question Bank Linkage and Crossing Over

  • question_answer
    The map distance between genes A and B is 3 units, between B and C 10 units and between C and A 7 units. The order of the genes in a linkage map constructed on the above data would perhaps be [CMC Vellore 1994]

    A) A, B, C

    B) A, C, B

    C) B, C, A

    D) B, A, C

    Correct Answer: D

    Solution :

      From the recombination frequencies between different genes A, B and C, it is clear that distance between A and B genes is 3 units, between B and C 10 units and C and A 7 units. Hence linear order of genes on chromosomes is:


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