DNA (IMAGE) University of Tokyo Caption RNA shares chemical components with DNA and is an essential precursor to the existence of life. Credit Pixabay CC-0 https://pixabay.com/illustrations/dna-string-biology-3d-1811955/ Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.