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B
Dwarf gene of rice
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C
Dwarf gene of maize
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D
Disease resistant gene of rice
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Solution
The correct option is A Dwarf gene of wheat
Wheat Norin 10 is a semi-dwarf wheat cultivar with very large ears that were bred at an experimental station in Japan.
Norin 10 grew to just two feet tall, instead of the usual four, which made it less prone to wind damage.
Norin 10 provided two very important genes, Rht1 and Rht2, that resulted in reduced-height wheat, thus allowing better nutrient uptake.
The Norin 10 dwarfing gene is also known in scientific literature as a reduced height (Rht) gene which may either be dominant or semidominant.
Norin 10 helped developing countries, such as India and Pakistan, to increase the productivity of their crops from approximately 60% during the Green Revolution.