A number of research have reported that SARS-CoV-2 acquired mutations extra slowly than anticipated for impartial evolution, which means that purifying choice could be the dominant mode of evolution. Research on SARS-CoV-2 variant mutations have additionally highlighted convergent evolution, which can contribute to viral adaptation to human hosts.
Lively or passive mutation strain can result in variations in base composition in any respect ranges of the phylogenetic hierarchy and all through the genome. The compositional area construction can be altered by both altering nucleotides on the borders that separate the 2 domains or by altering nucleotide frequencies at any given area.
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