Question

which of the following is an example of a complementary base pair in dna?
a a - g
b a - u
c c - g
d t - c

Explanation:

In DNA, the complementary base - pairing rules are as follows: Adenine (A) pairs with Thymine (T) through two hydrogen bonds, and Cytosine (C) pairs with Guanine (G) through three hydrogen bonds.

• Option a: A - G is not a valid complementary base pair in DNA.
• Option b: A - U is a base - pair in RNA (where Uracil (U) is present instead of Thymine (T) in DNA).
• Option c: C - G follows the correct complementary base - pairing rule in DNA.
• Option d: T - C is not a valid complementary base pair in DNA.

Answer:

C. C - G