What is the advantage gained by the substitution of thymine with uracil? I have read previously that it is due to thymine being "better protected" and therefore more suited to the storage role of DNA, which seems fine in theory, but why does the addition of a simple methyl group make the base more well protected?
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You should really be asking questions like this in a general biology group, such as the biology stack exchange.
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From the FAQ:
While the site is intended to be oriented toward life sciences and next generation sequencing, any scientific topic related to genomics is open for discussion.
There's nothing wrong with your question. However, GenoMax did point you to an answer. Questions related to sequencing and processing tend to get answered here faster than theoretical biology questions, though.
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