https://phys.org/ en-us Latest news from Weber State University 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? https://phys.org/news/2012-11-scientists-blocks-ancient-genetic.html Biotechnology Fri, 09 Nov 2012 16:58:46 EST news271702602