2. GENETIC CODE
It is the relationship between the sequence of
nucleotides on mRNA and the sequence of amino acids
in the polypeptide. In 1954, George Gamow, a physicist
proposed that in order to code for all the 20 amino
acids, the code should be made up of three
nucleotides.
3. Stages of Protein Synthesis
Synthesis of proteins takes place through the three
stages, i.e. initiation, elongation and termination.
Initiation
In prokaryotes, initiation requires the ribosome (large
and small subunits), the mRNA, Initiation tRNA and
three Initiation Factors (IFs). For initiation to take
place, the ribosome first
