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NEET Sample Paper NEET Sample Test Paper-52

  • question_answer
    When a genetically dwarf pea plant is treated with giberellin, it becomes as tall as the genetically tall plant. Suppose this gibberellin treated tall looking pea plant is crossed with a genetic dwarf pea plant, the progeny will consist of-

    A) 3 tall : 1 dwarf

    B) 2 tall : 2 dwarf

    C) All tall only

    D) All dwarf only

    Correct Answer: D

    Solution :

    Gibberellin treatment changes only the phenotype of the plant from dwarf to tall. The genotype remains same i.e. tt. Therefore, when it is crossed with another dwarf (tt), all the progeny will be dwarf only.


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