5/18/2017 1:45:00 PM New study sheds light on origins of life on Earth
URBANA, Ill. (AP) — A new study from the University of Illinois weighs in on the debate surrounding the origins of life on Earth.
University researchers have provided evidence for a “metabolism-first” model of creation by tracing the evolution of molecular functions through time.
Scientists agree that elements from early Earth’s primordial soup joined to form simple carbon-based molecules that became the predecessors of everything to come. But what happened next is an open question.
One popular theory suggests ribonucleic acid molecules jump-started life. They contain the genetic blueprints for proteins and are capable of performing simple chemical reactions. But some scientists argue RNA is too complex to have initiated it all. That group says simpler molecules had to evolve the ability to perform metabolic functions first.