Article
Causes and Consequences of Purifying Selection on SARS-CoV-2.
Genome biology and evolution - 1 Oct 2021
Morales Atahualpa Castillo, Rice Alan M, Ho Alexander T, Mordstein Christine, Mühlhausen Stefanie, Watson Samir, Cano Laura, Young Bethan, Kudla Grzegorz, Hurst Laurence D
Abstract excerpt
Owing to a lag between a deleterious mutation's appearance and its selective removal, gold-standard methods for mutation rate estimation assume no meaningful loss of mutations between parents and offspring. Indeed, from analysis of closely related lineages, in SARS-CoV-2, the Ka/Ks ratio was previously estimated as 1.008, suggesting no within-host selection. By contrast, we find a higher number of observed SNPs...
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