The two-domain system is a biological classification of all organisms in the tree of life into two domains: Archaea, which includes eukaryotes in this classification, and Bacteria. It emerged from development of knowledge of archaea diversity and challenges the widely accepted three-domain system that classifies life into Bacteria, Archaea, and Eukarya.
The two-domain system is a biological classification of all organisms in the tree of life into two domains: Archaea, which includes eukaryotes in this classification, and Bacteria. It emerged from development of knowledge of archaea diversity and challenges the widely accepted three-domain system that classifies life into Bacteria, Archaea, and Eukarya.
Source: Wikipedia "Two-domain system" · CC BY-SA 4.0
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