Question

The number of Guanines and Adenines present in the DNA molecule of pitch at 170° with 130 Hydrogen bonds between base pairs:

• A. 20, 10
• B. 10, 30
• C. 20, 30
• D. 30, 20

Hint:

Remember, in DNA, guanine and cytosine form 3 hydrogen bonds, and adenine and thymine form 2 hydrogen bonds.

Answer 1

The Correct Option is D

The total number of hydrogen bonds between the base pairs is 130.
Since guanine (G) pairs with cytosine (C) and adenine (A) pairs with thymine (T), their counts are equal.
Based on the number of hydrogen bonds and base pair relationships, the number of guanines and adenines are 30 and 20, respectively.