Scientists have long pondered how life arose from a primordial soup of inorganic chemicals and began to reproduce. An essential component of this process is DNA, which tells cells how to form and what to do. DNA guides organic processes, yet DNA itself is the result of an organic reaction. So which came first? It’s a microbiological version of the chicken and the egg.
In 2014, a group of scientists at the University of Cambridge offered an answer to this age-old question by showing