Q. In a DNA segment having six coils, there are 22 nitrogen base pair linked by two hydrogen bonds. How many cytosine bases are found in that segment?
A) 22
B) 38
C) 44
D) 76
Explanation
One coil of DNA has 10 base pairs hence, the six coils contain 60 base pairs. The nitrogen base pairs linked by two hydrogen bonds are 22. Hence, the nitrogen base pair with three hydrogen bonds, $i.e.,$ G=C will be 60-22=38.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.