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Carl Woese invented the 3 Domain system.
(The picture below shows Carl Woese.)

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This system was developed in the 1960's, but wasn't accepted until the 1980's.

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Which domains were apart of this system?

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Which domains were apart of this system?

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The domains that are apart of the three domain system are archaea. bacteria, and eukarya.
(The picture below shows the three domain system.)

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This system is needed to make the process easier when beginning the classification process.

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A pro about this system is that this system is still used today, and there are currently no known cons.

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Which kingdoms were apart of this system?

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Which kingdoms were apart of this system?

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Every kingdom falls under this system.

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How does this system compare to the modern classification (6 kingdom) system.

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How does this system compare to the modern classification (6 kingdom) system.

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Woese did RNA analysis on prokaryotes and eukaryotes and suggested the 3 main groups of classification.

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What new information led to the development of each of the classification systems?

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What new information led to the development of each of the classification systems?

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At first there were only two domains, prokaryotes and eukaryotes. Woese then split up the prokaryote domain into archaea and bacteria. He came to the conclusion that archaea bacteria live in very extreme environments while other bacteria live in environments that are nowhere near as extreme.

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What parts of this system do we use still today (if any)?

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What parts of this system do we use still today (if any)?

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We still use all parts of this system.

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Pick an organism and classify it using this system.

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Pick an organism and classify it using this system.

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(The picture below is a fungi which falls under the eukarya domain.)

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What parts of this system are no longer used?

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What parts of this system are no longer used?

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All parts of this system are still used today.

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What is the advantage of this system over the other systems?

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What is the advantage of this system over the other systems?

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This classification system has an advantage over other systems because this is the only system that we still use today.