Saturday, April 21, 2012

Strange Cousins: Molecular Alternatives to DNA, RNA Offer New Insight Into Life's Origins

ScienceDaily -- Living systems owe their existence to a pair of information-carrying molecules: DNA and RNA. These fundamental chemical forms possess two features essential for life: they display heredity -- meaning they can encode and pass on genetic information, and they can adapt over time, through processes of Darwinian evolution.

MORE: http://www.sciencedaily.com/releases/2012/04/120419143117.htm