What fraction of the nucleotides in a double-stranded DNA molecule are cytosine and thymine (% C and % T added together)?

Question

Quizplus · Accepted Answer

The base pairing rules of DNA state that cytosine (C) pairs with guanine (G) and adenine (A) pairs with thymine (T). Therefore, in a double-stranded DNA molecule, the amount of C and G added together will be the same as the amount of A and T added together. Since there are only four nucleotides in DNA (C, G, A, and T), the maximum percentage of C and T added together is 50%. Therefore, the best answer is B) 50%.

What Fraction of the Nucleotides in a Double-Stranded DNA Molecule