NEET AIPMT SOLVED PAPER SCREENING 2008

  • question_answer
    A transgenic food crop, which may help in solving the problem of nightblindness in developing countries is

    A) Flovr savr tomatoes       

    B) Starlink maize

    C) Btsoybean         

    D)        Golden rice

    Correct Answer: D

    Solution :

    Vitamin-A deficiency causes nightblindness among children. Vitamin-A deficiency often occurs where rice is the staple food since, rice grain does not contain p carotene. Three transgenes providing phytoene synthase, phytoene desaturase, zeta carotene desaturase and   lycopene   cyclase   activities   were transferred into rice by Agrobacterium mediated transformation.  The resulting transgenic rice popularly called Golden rice contains good quantities of p-carotene. Flavr savr is genetically modified tomato, which remains fresh and retains their flavor much longer than normal tomato due to blocking of synthesis of fruit softening enzyme polygalacturonase.


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