linkedin post 2021-11-20 05:38:38

KNOCK-OUTS. “Later, parallel mutations in the adenine DNA glycosylase gene (mutY) arose in independent lineages; these mutations approximately halved the mutation rate, apparently by knocking out a mechanism by which misincorporations of oxidized nucleotides during DNA replication (caused by the original mutT defect) were misrepaired. The resulting reduction in genetic load was estimated to be ~0.5%.”

https://www.nature.com/articles/nrg3564

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