. Sonora - 64 and Lerma Rojo - 64 were brought to India from Mexico and modified through

A: UV rays

B: X rays

C: beta rays

D: gamma rays

Best Answer

Explanation:

Sonora - 64 and Lerma Rojo - 64 are mutant dwarf varieties of wheat that were developed in Mexico and later are modified through gamma rays to produce a beneficial mutant.
These varieties are high-yielding and also have other benefits such as resistance to diseases and lodging.

Final Answer: Hence, the correct answer is (D) gamma rays.

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