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How does uracil differ from thymine?

Answer 1

Thymine and uracil are both pyrimidines consisting of a ring containing four carbon atoms and two nitrogen atoms. The C5 atom of thymine has a methyl group #"(-CH"_3)"# attached to it, while uracil does not. The methylation of thymine makes the DNA more stable and protects it from attack from certain enzymes. Source:
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Answer 2

Isabella Anderson

Uracil lacks a methyl group present in thymine.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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