Bases Dna Neuclotides Diagrams. Draw the structure of one nucleotide. A nucleotide is composed of 3 parts.
Nucleotide structure courtesy of the national human genome research institute. Sequence of 3 bases of nucleotides in m rna molecule constitutes a codon. In rna the thymine base is replaced by uracil.
A nucleotide is the basic structural unit and building block for dna.
The four nitrogenous bases in dna are adenine cytosine guanine and thymine. Dna contains two purine bases adenine and guanine and two pyrimidine bases cytosine and thymine. Click card to see definition. The four nucleotides present in dna are guanine adenine cytosine and thymine.