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Question
Why is thymine being a methylated base advantageous for DNA?
Options
It allows RNA to bind to DNA directly
It prevents all mutations in DNA
It makes DNA replicate faster
It allows repair enzymes to spot uracil as 'out of place' and correct cytosine deamination
MCQ
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Solution
Thymine being a methylated base is advantageous because it allows repair enzymes to spot uracil as "out of place" and correct cytosine deamination. This mechanism protects DNA from spontaneous mutations caused by cytosine damage.
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