Question

which shows the correct complementary base pairing for dna?

Explanation:

Step1: Recall DNA base - pairing rules

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

Step2: Analyze each option

• Option "C - A, T - G": Incorrect. A should pair with T, and C should pair with G.
• Option "T - A, G - C": Correct. Follows A - T and G - C pairing rules.
• Option "A - G, C - T": Incorrect. A should pair with T, and C should pair with G.
• Option "C - G, U - A": Incorrect. U (uracil) is not present in DNA (it is in RNA). DNA has T instead of U.

Answer:

T - A, G - C