Origin of Life on Earth Questioned — Scientists' Conclusions

Scientists are questioning the traditional theory of a single common ancestor for life on Earth. New research suggests that bacteria and archaea may have independently developed their own biochemical mechanisms, indicating that life may have arisen twice. Analysis of ancient enzymes revealed differences in the molecular tools of these groups. The authors believe that the first enzymes could have formed based on minerals from hydrothermal vents. The hypothesis increases the likelihood of life existing in the universe but requires further research.

New research challenges the traditional concept of the origin of life on Earth. Scientists propose that life may have arisen twice, not once. Analysis of ancient enzymes showed that bacteria and archaea use different molecular tools to perform the same vital chemical reactions. This indicates that key metabolic elements could have formed independently in two separate evolutionary lineages. Researchers believe that in early stages, minerals and metals from hydrothermal vents on the ancient ocean floor could have performed enzyme functions. Over time, primitive structures began to synthesize their own enzymes, marking an important evolutionary step. If the hypothesis is confirmed, it would change our understanding of life's origins and increase the likelihood of life on other planets. The authors emphasize the need for further research for final confirmation.