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George Beadle, a prominent geneticist and Nobel laureate, passed away on June 9, 1989, leaving a lasting legacy in the field of genetics. His pioneering work on the relationship between genes and enzymes, known as the "one gene-one enzyme" hypothesis, revolutionized our understanding of how genetic information is used to produce proteins. Beadle's contributions greatly influenced the development of molecular biology and genetics, leading to significant advancements in the field.