Viața de pe Pământ ar fi putut apărea de două ori. Ce spune, de fapt, noul studiu despre originea bacteriilor și arheelor

A new study suggests that life on Earth may have originated twice, with separate evolutionary paths for bacteria and archaea. Researchers propose that the transition from non-living chemistry to autonomous metabolism occurred independently in these two branches. While maintaining a common ancestor, LUCA, the study indicates that this ancestor lacked a fully autonomous metabolism. The research highlights the role of geological conditions and metals in early metabolic reactions, suggesting a gradual evolution of metabolism rather than an instantaneous emergence. This interpretation has significant implications for understanding the origins of life.