This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Molecular Biology Techniques, Subject name: Biochemistry
[{'content': 'Quantitative DNA analysis/estimation is done by: \nSelect and explain. \nA. pH meter, B. Sphymometer, C. Spirometer, D. Spectrometer', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. SpectrometerAbsorbance of UV light at 260nm can be used to estimate DNACan be done using spectrophotometer or simply spectrometer.Other options are self explanatory.', 'role': 'assistant'}]