Q. In a DNA molecule, the adenine is 15%. What will be the percentage of guanine in this DNA?
A) 15%
B) 35%
C) 70%
D) 30%
Explanation
According to Chargaff’s rule, the total amount of adenine released is equal to the total amount of thymine and the total amount of cytosine is equal to the total amount of guanine, $i.e$., A=T and C=G. Thus, if DNA molecule contains 15% adenine then C and G will constitute 70%, out of which guanine will be 35%.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.