Main chain (trunk)
It is formed by alternately connecting deoxyribose and phosphate groups through ester bonds. There are two main chains, which, like "twisting", hover around a coaxial center in the right hand direction.
Parallel to each other and in opposite directions to form a double helix structure. The main chain is outside the helix, which just shows the hydrophilicity of the main chain composed of sugar and phosphoric acid. On the outside of DNA is a skeleton composed of deoxyribose and phosphoric acid alternately connected. The so-called double helix refers to the shape of two main chains.
Main chain (trunk)
It is formed by alternately connecting deoxyribose and phosphate groups through ester bonds. There are two main chains, which, like "twisting", hover around a coaxial center in the right hand direction.
Parallel to each other and in opposite directions to form a double helix structure. The main chain is outside the helix, which just shows the hydrophilicity of the main chain composed of sugar and phosphoric acid. On the outside of DNA is a skeleton composed of deoxyribose and phosphoric acid alternately connected. The so-called double helix refers to the shape of two main chains.