What forms the double helical structure?
1 Answer
Feb 3, 2018
Two strands of DNA, constituted by deoxy-ribonucleotides are arranged to form double helical strucure.
Explanation:
DNA molecule consists of two strands, which are arranged to form a double helix spiral structure. Each strand is made up of 4 different deoxyribonucleotides: adenine-, guanine-, cytosine- and thymine-deoxyribonucleotides, and are arranged in specific manner.
Two strands are held together to form stable structure by the formation of hydrogen bonds between nitrogen bases of nucleotides of two strands.
The pairing between nitrogen bases is specific. Adenine pairs with thymine and guanine pairs with cytosine. Two strands are helically coiled around each other with ladder formed by paired nitrogen bases.
