DNA analysis provided the opportunity for researchers to effect changes in the tree of life in an incredibly detailed manner. Which always has a question mark at the base. The question had been who started it all? But they came up with a pretty good description to satisfy this need, which is LUCA, of all of Earth's creatures, also referred to as microbial Eve. Based on the time of LUCA's existence on the planet, it may have lived in the really inhospitable environs like underwater and even...
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