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

Step-by-step solution

Vitamin-A deficiency causes nighthlindness among children. Vitamin-A deficiency often occurs where rice is the staple food since, rice grain does not contain 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 -carotene. Flav sav is genetically modified tomato, which remains fresh