Q. Which one of the following nitrogenous bases is seen only in RNA?
A) Adenine
B) Thymine
C) Uracil
D) Cytosine
Explanation
In DNA, the nitrogenous bases are adenine, guanine(purines) and cytosine, thymine (pyrimidines) while RNA contains uracil in place of thymine (both pyrimidines) along with rest three similar to that of DNA.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.