What are the 2 purine bases and the 2 pyrimidine bases?
Purine contains two carbon-nitrogen rings and four nitrogen atoms.
Purines have high meting point.
Pyrimidines contains one carbon-nitrogen ring and two nitrogen atoms.They have low melting point.
Blue spheres are Nitrogen atoms and Pyrimidines is a one ring molecule.
Two Purines are Adenine and Guanine.
Two Pyrimidines are Thymine and Uracil.