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Q3A. You need to analyse a DNA sample on an agarose gel. You added 20 ml of 10X TBE buffer to make a total of 400 ml of runni

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Answer #1

1. 0.75% agarose means 0.75 grams in 100 ml

. x grams in 40 ml.

x= 40 *0.75/ 100= 0.30 grams

So 0.30 grams (30 mg) in 40 ml

2. The concentration of the agarose is indirectly proportional to the sieve size. If concentration increases , sieve size decreases which offers more resistance for the DNA to migrate. So the time taken to resolve the DNA on agarose gel will be high.

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