Question

Which one of the following is the way bases are paired in a double helix of DNA?

(A) A-T, G-C
(B) A-U, G-C
(C) A-G, C-T
(D) A-C, G-T

Answer 1

Adenine (A) always pairs with Thymine (T), and Guanine (G) always pairs with Cytosine (C) in a double helix of DNA.

Step-by-step explanation:

The way bases are paired in a double helix of DNA is A-T and G-C. Adenine (A) always pairs with Thymine (T), and Guanine (G) always pairs with Cytosine (C). These pairings are known as complementary base pairs, which means that they always pair together in DNA.