Why Is It Essential for the Nitrogenous Bases to Remain

question 37

Multiple Choice

Why is it essential for the nitrogenous bases to remain in one tautomeric form when part of a DNA molecule?

• A)It allows the width between the phosphate strands to remain consistent.
• B)It is essential for proper base pairing of A with T and C with G.
• C)The presence of additional tautomeric forms would violate Chargaff's rules.
• D)The presence of additional tautomeric forms would cause the two DNA strands to form a parallel configuration rather than an antiparallel configuration.

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