TRUE OR FALSE 1. Nitrogenous bases cannot undergo electrophilic aromatic substitution. 2. Cytosine forms three hydrogen bonds with guanine while Adenine forms two hydrogen bonds with Thymine in the messenger RNA. 3. The glycosidic bond in nucleotides is stable in dilute ammonium hydroxide solution and dilute Sodium bicarbonate solution. 4. In gel electrophoresis, a DNA is expected to migrate towards the cathode. 5. Tautomerism is a phenomenon observed in both purine and pyrimidine bases.

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