Strange cousins: Molecular alternatives to DNA, RNA offer new insight into life's origins
Thursday, April 19, 2012 - 18:30
in Biology & Nature
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.