BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Eventually, after elongation has proceeded for some time, the ribosome comes to a stop codon, which signals the end of the genetic message. As a result, the ribosome detaches from the mRNA and releases the amino acid chain.

Detailed explanation-2: -Elongation continues until all of the codons are read. Lastly, termination occurs when the ribosome reaches a stop codon (UAA, UAG, and UGA). Since there are no tRNA molecules that can recognize these codons, the ribosome recognizes that translation is complete.

Detailed explanation-3: -The presence of a stop codon-UAA, UAG or UGA-in the A site of the ribosome is generally a signal to terminate protein synthesis. This process constitutes the last essential stage of translation, as it ensures the formation of full-sized proteins.

Detailed explanation-4: -Stop Codons Mark the End of Translation The end of the protein-coding message is signaled by the presence of one of three codons (UAA, UAG, or UGA) called stop codons (see Figure 6-50). These are not recognized by a tRNA and do not specify an amino acid, but instead signal to the ribosome to stop translation.