Finally, the three-domain structure of Woese's tree (Figure 1a) shows that evolutionary history is decoupled from biological organization. Indeed, archaea and bacteria appear very similar ...

One of these involves fusion between cells from domains Archaea and Bacteria: one of the cells involved in the fusion becomes the eukaryote nucleus (Martin & Muller 1998; Martin 2005; Martin et al.

Defense systems found in all complex life on Earth came from "Asgard." The ancestor of plants, animals and fungi evolved ...

as well as in a few bacteria and archaea species, the new study establishes divergent transcription—the reading of genes in both directions—as a widespread feature conserved across all three domains ...

In the mid-1990s, scientists made a discovery that shook up the understanding of life on Earth: vast reservoirs of microbes can be found beneath the planet’s surface, often buried kilometers deep in ...