Question #94766

1 Answer
Mar 31, 2017
  • pyrimidines are single ringed nitrogeneous bases.


  1. nitrogeneous bases are:
  2. purine
  3. pyrimidines

puines are adenine and guanine. these are nine membered , double ringed .
pyrimidines are thymine and cytosin in DNA.In RNA, uracil and cytosin are present. they are six membered, single ringed.web images