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15 March, 12:14

When did scientists realize that archae are different from bacteria

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  1. 15 March, 12:36
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    The scientific community was understandably shocked in the late 1970s by the discovery of an entirely new group of organisms - - the Archaea. Dr. Carl Woese and his colleagues at the University of Illinois were studying relationships among the prokaryotes using DNA sequences, and found that there were two distinctly different groups. Those "bacteria" that lived at high temperatures or produced methane clustered together as a group well away from the usual bacteria and the eukaryotes. Because of this vast difference in genetic makeup, Woese proposed that life be divided into three domains: Eukaryota, Eubacteria, and Archaebacteria. He later decided that the term Archaebacteria was a misnomer, and shortened it to Archaea. The three domains are shown in the illustration above at right, which illustrates also that each group is very different from the others.
  2. 15 March, 13:06
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    Around the year of 1970 is when they realized.
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