6
The mutagenic action of Gamma-rays was discovered by
EXPLANATION
Mutagenesis & Mutation Mechanisms
- Lewis John Stadler (1928): American geneticist who first discovered and conclusively demonstrated the mutagenic effects of X-rays and radium/gamma radiation in plants (Barley and Maize), published in Science in 1928.
- Comparison: H.J. Muller (1927) discovered X-ray induced mutations in the fruit fly Drosophila. (Correct answer: Option 3)
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