Two Separate Beginnings: Study Finds Bacteria and Archaea Metabolism Emerged Independently
TL;DR
A Science Advances study proposes life on Earth may have arisen twice, with bacteria and archaea independently evolving metabolism before LUCA, suggesting two roots of life rather than a single lineage; enzymes may have been preceded by environmental metals and four catalytic phases led proto-cells to free-living status after their split.
- Radical Study Suggests Life on Earth Arose From Non-Living Matter TWICE ScienceAlert
- A New Study Points to Two Origins of Life on Earth by Tracing Early Chemical Reactions in Single-Celled Organisms Smithsonian Magazine
- Two origins of life: Free-living cells may have emerged twice as bacteria and archaea diverged Phys.org
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