Simpler times: Did an earlier genetic molecule predate DNA and RNA?
Monday, January 9, 2012 - 06:00
in Biology & Nature
(PhysOrg.com) -- In the chemistry of the living world, a pair of nucleic acidsDNA and RNAreign supreme. As carrier molecules of the genetic code, they provide all organisms with a mechanism for faithfully reproducing themselves as well as generating the myriad proteins vital to living systems.