This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
DNA estimation can be done by 
Select and explain. 
A. Spirometer, B. Spectrophotometer, C. pH meter, D. Sphygmomanometer
B: Spectrophotometer
Answer: B: Spectrophotometer 
Explanation: Ans. b. Spectrophotometer