Answer & explanation:
Translation begins with the association of a ribosome, mRNA, and tRNA carrying the amino acid methionine, which bind to the ribosome P site.
This tRNA anticodon is UAC and its mRNA codon is AUG. This nucleotide combination consists of the start codon. Then, another tRNA binds to ribosome at site A.
Once the first two tRNAs fit into the P and A sites, the ribosome will catalyze the amino acid binding of its tRNAs by moving through the mRNA molecule, a space corresponding to a base triplet.
As the ribosome moves, the sites are taken up by new tRNAs with their corresponding mRNA amino acids, and the amino acid linkages are synthesized until the translation termination signal sequences are found.
Translation ends when one of three specific codons is found on the same mRNA tape being translated. The codons are UGA, UAA, or UAG, and these are known as stop codons.
Since these codons are unread, they have no effect on translation. Finally, the protein is released from the ribosome, which becomes available to begin the synthesis of another protein.
