In DNA two types of nitrogenous base are formed :- theses are -(1) purine – is a double ring structure present in the form of adnine and guanine. (2) pyrimidine – is a single structure present in the form of cytosine and thymine.
There are 4 types of nitrogenous base (i) Adenine(ii) Guanine(iii) cytosine(iv) Thymine
adenine paired with thymine
guanine paired with cytosine
purines and pyrimidines
purines- adenine and guanine
pyrimidines- cytosine , uracil(in RNA only ) and thymine.
therefore 4 types.
^_^
Nitrogen bases are classified into two types-
1)Purines–eg guanine, adenine
2)Pyrimidines–eg cytosine, uracil , thymine
just search in google for full info …lol
Mainly 2 categories are there
They are purines:adenine and gunning
and pyrimidines :cytosine and thiamine
Purines- adenine and guanine
Pyrimidines- cytosine,thymine.
A-T
G-c
There are 4 Nitrogenous bases present in the DNA :-
Adenine,Guanine,Thymine and Cytosine.
Adenine and Guanine are classified as Purines while Thymine and Cytosine are classified as Pyrimidines.
Basically there are four nitrogenous bases in the DNA which is Adenine, thymine , cytosine and guanine .
