How many different nitrogen bases are there?

1 Answer
Dr Birendra Kumar Mishra
Nov 6, 2016

Two groups of five.

Explanation:

  1. 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.
  2. 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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