Samacheer Kalvi · 11th TN - English Medium · Bio Zoology · Page 13

1.4 Three Domains of life

Chapter 1: Chapter 1 · Bio Zoology · EN medium

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Three domain classification was proposed by Carl Woese ( ) and his co-­workers. They classified organisms based on the difference in 16S rRNA genes. The three domain system adds the taxon ‘domain’ higher than the kingdom. This system emphasizes the separation of Prokaryotes into two domains, Bacteria and Archaea, and all the eukaryotes are ARCHAEA (Extremophiles) Methanogens, Halophiles, Thermoacidophiles BACTERIA Cyanobacteria, Eubacteria, beneficial& pathogenic

📖 Namma Kalvi 11th Bio Zoology Textbook English Medium · Page 13

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Three domain classification was proposed by Carl Woese ( ) and his co-­workers. They classified organisms based on the difference in 16S rRNA genes. The three domain system adds the taxon ‘domain’ higher than the kingdom. This system emphasizes the separation of Prokaryotes into two domains, Bacteria and Archaea, and all the eukaryotes are ARCHAEA (Extremophiles) Methanogens, Halophiles, Thermoacidophiles BACTERIA Cyanobacteria, Eubacteria, beneficial& pathogenic

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