The concentration of purified dna, Biology

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In an experiment, it was necessary that you determine the concentration of dsDNA by using a spectrophotometer. You used 6 microliters of your purified dsDNA, and the reading at OD=A260 nm was 0.39. What is the concentration of purified DNA in your sample?

a. 2.67

b. 3.25

c. 2/15


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