Question

Out of $A=T,G\equiv C$ pairing, bases of DNA may exist in alternate valency state owing to arrangement called

• A. analogue substitution
• B. Tautomerisational mutation
• C. frameshift mutation
• D. point mutation

Answer 1

The correct option is B

Tautomerisational mutation

Tautomerization occurs through rearrangement of electrons and protons of the molecules. Due to this the purines and pyrimidines in DNA and RNA may exist in several alternate forms of tautomers.