Which nitrogen bases are complementary to each other

Adenine and guanine are purines, while thymine, cytosine and uracil are pyrimidines.

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the framers of the constitution insisted that federal judges be nominated instead of elected due to their desire to have judges above the shifting whims of the masses.

the hope, whether achieved or not, was that federal judges would only be beholden to the law and that by not having judges be elected, they would be protected if that law dictated an outcome that ran counter to popular opinion.