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Byju's Answer
Standard XII
Biology
Inorganic and Organic Biomolecules
Out of A = T ...
Question

Out of A = T, G = C pairing, bases of DNA may exist in alternate valency state due to


A

analogue substitution

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B

tautomerization

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C

frameshift mutation

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D

point mutation

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Solution

The correct option is B

tautomerization


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 or tautomers.


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