Translation: elongation.
<P>
<Li> The   anticodon   of   an   incoming   tRNA  base-pairs  with  the
complementary codon in the A site.
<Li> A  peptide bond is formed between the new amino acid in the A site
and the growing polypeptide in the P site.
<Li> The ribosome translocates the tRNA in the A site to the P site.
<Li> The  empty tRNA in the P site is moved to the E site and released.
The mRNA moves the next codon into the A site.