How many different nitrogen bases are there?

Answer 1

Lydia Adams

Two groups of five.

There two groups nitrogenous bases are purines and pyramidines. They are found in DNA and RNA. Purines are two, while pyramidines are three in number. So, the number of nitrogenous bases are five.
Purines:- The one ringed purines are adenine and guanine.
Pyramidines:-The two ringed pyramidines are cytocine, thymine and uracil. The thymine is found in DNA, while uracil in RNA only.

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Answer 2

Emma Arvizu

The nitrogen bases are guanine (G), cytosine (C), thymine (T), and adenine (A).

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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.