Concentration of DNA is measured by-: (A) Absorption at 260 nm, (B) D-oxyribose estimation, (C) Infrared examination, (D) Ultrasound examination
Answer is A. Concentration (and quality) of nucleotides and nucleic acid (DNA/RNA) is measured in terms of "absorbance at 260 nm" with a Ultraviolet (UV) spectrophotometer.