Chapter 4, Problem 5TYR

Summary Introduction

Introduction:

Nucleotides are building blocks of nucleic acids, such as DNA or RNA. Nucleotide contains nitrogenous base, sugar and phosphate group. DNA is a genetic material, consisting long stretch of nucleotide sequence with 2 m length. Cytosine (C) and thymine (T) are pyrimidine (single carbon-nitrogen ring) and adenine (A) and guanine (G) are purines (double carbon-nitrogen ring). Usually DNA are found in double helical structure. Hydrogen and covalent bonds connect bases and backbones of DNA, respectively. Two hydrogen bonds are formed between A and T, whereas three hydrogen bonds are formed between C and G.