To separate DNA molecules based on their molecular mass or size in base pairs

To separate DNA molecules based on their molecular mass or size in codons

DNA will move towards the negative electrode in an electric field

At around neutral pH, DNA is negatively charged owing to the phosphate groups

At around neutral pH, DNA is positive charged owing to the phosphate groups

DNA will move towards the positive electrode in an electric field

purified from agar of the algae

purified from agar of the seaweed

at a rate inversely proportional to the log10 of their molecular mass (or number of base pairs)

at a rate proportional to the log10 of their molecular mass (or number of base pairs)

more rapidly than large sized DNA molecules due to pores in agarose gel-matrix that impede the larger DNA molecules

more rapidly than large sized DNA molecules due to pores in agarose gel-matrix that impede the smaller DNA molecules

more slowly than large sized DNA molecules due to pores in agarose gel-matrix that impede the larger DNA molecules