Which of the Following Statements is True for Double-Stranded DNA

Question

Which of the following statements is true for double-stranded DNA?
A) The amount of A is the same as the amount of T, and the amount of G is the same as the amount of C.
B) The amount of A is the same as the amount of G, and the amount of T is the same as the amount of C.
C) The amount of A is the same as the amount of C, and the amount of G is the same as the amount of T.
D) More than one of the above is true.

Accepted Answer

The base pairing in double-stranded DNA is A with T and G with C. This means that for every adenine (A) there will be a thymine (T), and for every guanine (G) there will be a cytosine (C). Therefore, the amount of A is always the same as the amount of T, and the amount of G is always the same as the amount of C.