A reference sample is needed from a victim of a sexual assault. Cells are recovered from a saline mouthwash procedure and the DNA is isolated by Chelex extraction. The DNA is diluted 40 µL into a total volume of 1000 µL and its absorbance is measured on a spectrophotometer at 260 nm. It gives a reading of 0.20. What is the concentration of DNA in the reference sample? (Chelex extraction renders DNA in a single stranded form, use 33 ug DNA / mL = 1 O.D. to calculate concentration)

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The Answer of A reference sample is needed from a victim of a sexual assault. Cells are recovered from a saline mouthwash procedure and the DNA is isolated by Chelex extraction. The DNA is diluted 40 µL into a total volume of 1000 µL and its absorbance is measured on a spectrophotometer at 260 nm. It gives a reading of 0.20. What is the concentration of DNA in the reference sample? (Chelex extraction renders DNA in a single stranded form, use 33 ug DNA / mL = 1 O.D. to calculate concentration)

A Reference Sample Is Needed from a Victim of a Sexual