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Question

Norin 10 gene from Japan is a______________

A
Dwarf gene of wheat
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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.

Therefore, the correct answer is option A.

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