Open the combination lock using the old combination. Remove the u-bar from the lock body so it's in the Unlock position. Use a screwdriver to open the anti-dust cover on the back of the combination lock. Align the old combination numbers to the guide points.
A base pair (bp) is a unit consisting of two nucleobases bound to each other by hydrogen bonds. They form the building blocks of the DNA double helix, and contribute to the folded structure of both DNA and RNA.
Base Pair ing. The rules of base pair ing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T). C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G) ... base pair. Association of two complement ary nucleotide s in a DNA or RNA molecule stabilized by hydrogen bond ing between their base components.