How many nitrogenous bases are there?

Question

shrutipande9 · Answer

hi1 welcome to openstudy! adenine thymine cytosine and guanine are d nitrogen bases of DNA and instead of thymine its uracil in RNA. apart from these main nitrogen bases there are a few uncommon bases like pseudo uracil...

anonymous · Answer

four of them adenine, thymine, cytosine, and guanine.

anonymous · Answer

Actually we have four nitrogen bases. Namely Adenine (6-aminopurine), Gaunine (2-amino-6-oxypurine), Thymine (2,4-dioxy-5methyl pyrimidine), Cytosine (2-oxy-4-amino pyrimidine), Uracil (2,4-dioxypyrimidine).

In DNA, adenine is always pairs with thymine with two hydrogen bonds and gaunine is pairs with cytosine with three hydrogen bonds. Whereas in RNA, uracil is present instead of thymine.