(Phys.org) —ETH-Zurich researchers look several billion years back in time, when life on Earth was just beginning. In a laboratory experiment, they examined how a primitive protein was able to evolve. However, ...

Biology - Cell & Microbiology

Mar 06, 2013 5 / 5 (2) 0 |

Scientists believe that prior to the advent of DNA as the earth's primary genetic material, early forms of life used RNA to encode genetic instructions. What sort of genetic molecules did life rely on before RNA?

Biology - Biotechnology

Nov 09, 2012 4.4 / 5 (12) 1 |