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New study challenges longstanding assumption about the cause of the genome's most common mutationdeamination, is about twice as likely to happen when a cytosine is chemically tagged by the addition of a molecule known as a methyl group to create 5-methylcytosine, which occurs in DNA at so ...
For example, the deamination of adenine can lead to the formation of hypoxanthine, which can pair with cytosine instead of thymine, resulting in a point mutation. Cells have evolved various DNA repair ...
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