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Genetics

How would you tell which one was DNA and which was RNA if you were looking at two polymer chains?

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June 18, 2015 4:34AM

There are some significant differences between DNA and RNA which may help you to identify which one is which.

For example, DNA does not have an oxygen on it's 2' carbon in the deoxyribose sugar whereas RNA does.

Furthermore, if you are able to see the organic bases, this may help you also. DNA has the bases ATCG. In RNA however, the T (thymine) is replaced with U (uracil) and so the bases in an RNA strand are AUCG.

In simple words, if there is an oxygen on the 2nd carbon of the sugar ---> RNA

If there is a U base ---> RNA.