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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.
In humans, half of the DNA for a child comes from the father and half from the mother. It is able to replicate itself for new cells because of its double helix structure. Each nitrogen base on the DNA strand is only able to pair with one other nitrogen base; therefore, when it splits, the DNA knows what to pair with each nitrogen base to complete a new strand. Learn more about Molecular Biology & DNA