Question

when the RNA made into DND, the presence of uracil is converted into thymine why ??​

Answer 1

Answer:

The first three are the same as those found in DNA, but in RNA thymine is replaced by uracil as the base complementary to adenine. ... In DNA, however, uracil is readily produced by chemical degradation of cytosine, so having thymine as the normal base makes detection and repair of such incipient mutations more efficient.

Answer 2

it is because urasil is only present in RNA,it can't be a part of DNA

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