Question

True replication of DNA is possible due to

• A. Hydrogen bonding
• B. Phosphate backbone
• C. Complementary base pairing rule
• D. None of the above

Answer 1

Answer: (C)

Complementary base pairing rule

Complementary base pairing rule: The rules of base pairing (or nucleotide pairing) are:
(i) A with T: The purine Adenine (A) always pairs with the pyrimidine Thymine (T).
(ii) C with G: The pyrimidine Cytosine (C) always pairs with the purine- guanine (G).

Because of the strict base-pairing pattern, the new daughter strand is assembled according to the base present on the template.

Thus, the correct answer is option C.