⏰ when
When did Carl Woese propose the three-domain system?
Quick Answer
Carl Woese proposed the three-domain system in 1990. It split life into Bacteria, Archaea, and Eukarya.
The Full Story
Carl Woese and colleagues proposed the three-domain classification of life in 1990 based on ribosomal RNA studies. The work showed that the ancient microbial group now called Archaea was fundamentally distinct from Bacteria and from Eukarya. This reshaped biology because it changed the tree of life from a two-kingdom or simple prokaryote-versus-eukaryote view. The discovery had deep implications for evolution, microbial ecology, and our understanding of life's early history.
Key Facts
1.1990: three-domain system proposed
2.The domains are Bacteria, Archaea, and Eukarya
3.It was based on ribosomal RNA evidence
YouTube Angle
Suggested video title for this topic:
"The discovery that redrew the tree of life"
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