For anyone who knows how to look the past present and. Viral evolution is a subfield of evolutionary biology and virology that is specifically concerned with the evolution of viruses.
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In addition most viruses provide many offspring so any mutated genes can be passed on to many offspring quickly.
Virus evolutionary tree. This elevated mutation rate when combined with natural selection allows viruses to quickly adapt to changes in their host environment. Viruses have short generation times and many in particular rna viruses have relatively high mutation rates. Viruses cannot be included in the tree of life because they do not share characteristics with cells and no single gene is shared by all viruses or viral lineages.
I found this information about the phylogenetic tree of covid 19 very interesting in part due to how rapidly this virus mutates. Evolutionary trees are narratives of history written in genetic code records of family lineages that stretch into the distant past. While cellular life has a single common origin viruses are polyphyletic they have many evolutionary origins.
There are no ancestral viral lineages. Note that this tree was constructed with shared contributed information from just 333 samples and that as of today we know of 126 000 confirmed cases meaning that there are assuredly many more and this tree is a bare bones structure.
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