Previously, it was thought that LUCA is the source of life for all bacteria, archaea and eukaryotic species. Three theories of this area, called the "tree of life, the universe" has been accepted and widespread, until the recent discovery has led scientists to believe that the creature's real (real plants, animals, fungi and other living organisms that's separate from the cells, separated by a membrane), actually was born from bacteria, archaea and prokaryotes species.
with the species eukaryotic organisms appear very late in the timeline of evolution, this study focuses on the two ancient genes rest: bacteria and archaea. Based on the result of decades of genetic research information, a team of scientists have been classified separately in the presence of 286 514 LUCA protein clusters. If both genes are expressed in the form of bacteria and archaea, their DNA code, consisting of the letters A, C, G and T will be classified in a separate phylogenetic trees, eventually will lead to the next an independent body and unique.
From a lot of information to be gathered up, 355 protein clusters were traced backwards to mark ancestor LUCA, find out which creatures lived on Earth 4 billion years ago . According to research results, LUCA living around hydrothermal pools, live in environments without oxygen. They are autotrophic species, can get energy from carbon dioxide-rich environment and hydrogen around them. LUCA itself has a special enzyme, enabling them to survive in extreme environments such as volcanic hot. And with the same enzyme that, ancestor of life were able to filter metals and minerals from the underground circuit, like a living organism, thermophilic environments live in extremely hot temperatures today.
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