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DNA is a polar molecule because it has a negatively (-) charged phosphate group attached to the 5' end of the molecule and a negatively charge hydroxl group (OH) attached to t â¦ he 3' prime end of the molecule. Thus, it is a POLAR molecule which allows it to interact in an aqueous environment.NA is a polar molecule because it has a negatively (-) charged phosphate group attached to the 5' end of the molecule and a negatively charge hydroxl group (OH) attached to t â¦ he 3' prime end of the molecule.
DNA is slightly negative due to the phosphate group on the nucleotide so the fragments are always attracted to the positive pole The answer is A. DNA is negatively charged due to the phosphate groups embedded in side rails of the helix. When DNA is placed in an electric field, the fragments will migrate toward the positive pole (anode) as they are being repelled ... The agarose gel is placed in an electrophoresis chamber and covered with a buffer solution ...