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12th Class Biology Principle Of Inheritance And Variation Question Bank MCQs - Principles of Inheritance and Variation

  • question_answer
    The types of gametes formed by the genotype RrYy are

    A) RY, Ry, rY, ry               

    B) RY, Ry, ry, ry

    C) Ry, Ry, ry, ry                

    D) Rr, RR, Yy, YY

    Correct Answer: A

    Solution :

    [a] Number of gametes is calculated is 2n, where n = number of heterozygotes. RrYy is a dihybrid, so four types of gametes are formed (22) as RY, Ry, rY, ry.


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