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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.
Why mtDNA? â¢ Although nuclear DNA is more powerful â¢ mtDNA is more stable over time/conditions â¢ Why is that? â mtDNA is present in many copies â mtDNA exists within a double membrane organelle â¢ Can get more DNA â if sample is limited â¢ Can get DNA from highly degraded source