641046 external_news 1604607260 1604607260 The origins of life on Earth remains one of science’s biggest mysteries. Scientists have long tried to figure out the precursors to both RNA (ribonucleic acid) and DNA (deoxyribonucleic acid), as well as how the two emerged. Dr. Ramanarayanan Krishnamurthy of the Scripps Research Institute investigates possible chemical origins of both RNA and DNA, and his recent publication in Nature Communications raises an intriguing question: could RNA and DNA have arisen together, rather than one emerging before the other?

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