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.
Thats the entire question. there is notjing else to add. Thanks for your help though. Q3A....
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