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.
A base pair is two chemical bases bonded to one another forming a rung of the DNA ladder.. The DNA molecule consists of two strands that wind around each other like a twisted ladder.Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.he two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.