As origens da vida na terra (LUCA)

http://www.independent.co.uk/news/science/scientists-find-luca-a-single-cell-bacterium-like-organism-that-is-the-common-ancestor-of-all-life-a7157176.html


Citando:
"LUCA arrived about 3.8 billion years ago, and would eventually give rise to two different kinds of simple cells: bacteria and archaea. The realisation that it did so helps settle a big problem – the fact that the three domains of life, which include bacteria and archaea as well as the eukaryotes like plants and animals, didn’t seem to have a single point of origin.
It also allows scientists to explore the 355 genes that appear to have originated in Luca and understand what they share. The organism appears to have lived in vents deep in the sea, where metallic, gassy plumes erupt from seawater that interacts with magma that comes up from the ocean floor."