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.
what are the four nitrogen bases in dna and how do they base pair together phosphodiester bonds what type of bond holds the nucleotides together in the strands of a dna molecule hydrogen bonds what hold the two strands of nucleotides together between the paired nitrogen bases in a dna molecule making all the proteins an organsim needs what does dna contain the instructions or code for