Hi all
I must not be the only one who is thinking, what does bee virus and human virus have in common? Perhaps nothing.
In the classification of biological organisms, this criterion is often based on phylogenetic (evolutionary) relationships. However, there is no evidence that viruses possess a common ancestor or are in any way phylogenetically related. Nevertheless, classification along the lines of the Linnaean system (as proposed by Carolus Linnaeus in the 1700s) into families, genera, and species has been partially successful.
In addition, based on the organisms that viruses infect, the first broad division used in virus classification schemes involves the separating of viruses into vertebrate viruses, invertebrate viruses, plant viruses, bacterial viruses, and algae, fungi, yeast, and protozoan viruses. (However, viral families may fall into more than one of these classes.)
Within these classes, other criteria for subdivision are used, including general morphology (for example, envelope or the lack of it); nature of the genome [deoxyribonucleic acid (DNA) or ribonucleic acid (RNA)]; structure of the genome [single-stranded (ss) or double-stranded (ds), linear or circular, or fragmented or nonfragmented]; mechanisms of gene expression and virus replication (positive- or negative-sense RNA); serological relationships; host and tissue susceptibility; and pathology (symptoms or type of disease). *
comment:
These are not trivial distinctions, because the persistence in the environment or the mode of inactivation, these are directly related to the structure and type of virus you are dealing with. One size does not fit all with virus; each must be looked at separately, even in so-called groups.
PLB
* source: Virus classification. Marcia M. Pierce. Department of Biological Sciences, Eastern Kentucky University, Richmond, Kentucky. Last reviewed: May 2020
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