Mnemonic 3 | ||
| Purine Bases and Pyrimidine Bases | ||
| Purine and Pyrimidine Nitrogenous Bases can be remembered by the mnemonic : Girls Are Pure. Guanine Adenine Purines Rest i.e. Cytosine and Thymine and Uracil are Pyrimidines. The number of rings can be remembered by the fact that 1. Girls have 2 ovaries : i.e. 2 Rings for purines 2. Others i.e. Boys have one prostate/penis : i.e. 1 Ring for pyrimidines. Pyrimidine bases can be remembered by the mnemonic: CUTie PY (pronounced as Cutie Pie) CCytosine Uracil Thymine are PyPyrimidines Pyrimidines are CUT from purines, so the pyrimidines must be smaller (one ring). | ||