Scientists for the first time have found strong evidence that RNA and DNA could have arisen from the same set of precursor molecules even before life evolved on Earth about four billion years ago.
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2019/04/190401171401.htm
from All Top News -- ScienceDaily https://www.sciencedaily.com/releases/2019/04/190401171401.htm
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