Tuesday, April 27, 2010

"Origin of Life Chicken-and-Egg Problem Solved":
Scientists have wondered how the first simple, self-replicating chemicals could have formed complex, information-rich genetic structures, when replication was originally such an error-prone process. Every advance would soon be lost to copying errors.

According to a new study, the answer may lie in the fundamental nature of those chemicals. The errors may have triggered an automatic shutdown of replication. Such stalling would allow only error-free sequences to be completed, giving them a chance at evolving.
(Via BBspot.)