Due to the genetic diversity of viruses and their lack of ribosomal RNA, nucleotide-based phylogeny studies are not applicable to virology.

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Nucleotide-based phylogeny studies are applicable to virology, but due to the genetic diversity of viruses and their lack of ribosomal RNA, it is often necessary to use alternative methods such as analyzing protein sequences or comparing gene content and order.

Due to the Genetic Diversity of Viruses and Their Lack