Assuming the genomic DNA in your sample is at a concentratio
     Assuming the genomic DNA in your sample is at a concentration of. If the concentration of genomic DNA in your sample was 25 ng/mu L, would you need more or less sample to obtain 100 ng of genomic DNA?  Assuming the genomic DNA in your sample is at a concentration of 25 ng/mu L 
  
  Solution
1) Conc=50 ng/pL
for 100 ng volume required is 2 pL.
2) conc= 25 ng/uL
for 100 ng sample required is 4 uL.
3) conc= 25 ng/uL
for 100 ng volume required is 4 uL.

