WOESE – FOX’S THREE DOMAINS OF LIFE · Domain/Superkingdom is the highest taxonomic grouping in the Hierarchical biological classification system, above the Kingdom level. · The term “Domain” was introduced by American Microbiologist and Biophysicst Carl Woese et al . (1990) together with the proposal of a natural classification system for all life on Earth, including microorganisms, which had previously escaped any attempt of classification based on evolutionary relationships. · In 1990, Carl Richard Woese and his collaborator George Fox used the Nucleotide sequences of the Small Sub-unit Ribosomal RNAs (SSU rRNAs or 16S rRNA) from a variety of organisms to determine that all living organisms belong to one of three Domains: a) Domain Archaea b) Domain Bacteria c) Domain Eukarya · Before the concept of...