Where Do Viruses Fit in Taxonomy?

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Discussion Overview

The discussion revolves around the classification of viruses within the framework of biological taxonomy, particularly in relation to the five kingdom system. Participants explore whether viruses fit into existing categories or if they should be considered non-living entities.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants assert that viruses do not fit into the five kingdoms of life, citing their lack of cellular structures and metabolic processes.
  • Others propose that the classification system is outdated and suggest that viruses have their own evolutionary tree, indicating a complex relationship with other domains of life.
  • A participant references an external source that outlines the characteristics of viruses, emphasizing their non-living status due to the absence of cellular functions.
  • There is a repeated inquiry about the placement of viruses, questioning whether they belong to Monera or should be classified differently.

Areas of Agreement / Disagreement

Participants generally agree that viruses do not fit neatly into the five kingdom system, but there is no consensus on how to classify them or whether they should be considered living or non-living entities. Multiple competing views remain regarding their evolutionary significance.

Contextual Notes

The discussion highlights limitations in the current classification systems and the complexity of virus taxonomy, but does not resolve these issues or provide definitive classifications.

Dagenais
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So, there are 5 basic Kingdoms in Taxonomy that include Monera, Animalia, Protista, Plant, and Fungi right?

So, where does the virus fight in? Monera? Or is it considered non-living?
 
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As far as I know, there is no placement of viruses in the five kingdom system.

This site gives the following explanation:

http://waynesword.palomar.edu/trfeb98.htm

"Viruses do not belong to the above 5 kingdoms of life. They are much smaller and much less complex than cells. They are macromolecular units composed of DNA or RNA surrounded by an outer protein shell. They have no membrane-bound organelles, no ribosomes (organelle site of protein synthesis), no cytoplasm (living contents of a cell), and no source of energy production of their own. They do not exhibit autopoiesis--i.e. they do not have the self-maintenance metabolic reactions of living systems. Viruses lack cellular respiration, ATP-production, gas exchange, etc."
 
Dagenais said:
So, there are 5 basic Kingdoms in Taxonomy that include Monera, Animalia, Protista, Plant, and Fungi right?

So, where does the virus fight in? Monera? Or is it considered non-living?

The kingdoms classification is outdated due to new reach done. Viruse classification is very complex but is evolutiary parrallelle to the other domains. Usually viruses have their tree of evolution.
 
More infortaion about viruses classification
http://www.ncbi.nlm.nih.gov/ICTV/
 
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