Question

Choose the correct answers from the alternatives given :
In an analysis of the number of different bases in a DNA sample, which result would be consistent with the base pairing rules?

• A. A = G
• B. A = C
• C. A + G = C + T
• D. A + T = G + C

Answer 1

The correct option is C A + G = C + T

The nitrogenous bases found in DNA are of two types:

Purines(Adenine and Guanine)

Pyrimidines(Thymine and Cytosine)

According to Chargaff's rule, the amount of purines is equal to the amount of pyrimidine in a DNA. Therefore, in an analysis of the number of different bases in a DNA sample, A+G=C+T, will be consistent with the base pairing rules.

So, the correct option is 'A+G=C+T'.