In translation, what codon signals termination?

Study for the DNA Structure, Replication, Transcription and Translation Test with flashcards and multiple choice questions. Each question offers hints and explanations. Prepare thoroughly and excel in your exam!

Multiple Choice

In translation, what codon signals termination?

Explanation:
In translation, termination is signaled by a stop codon. The stop codons—UAA, UAG, and UGA—do not code for any amino acid. Instead, they are recognized by release factors that prompt the ribosome to release the completed polypeptide and finish protein synthesis. The start codon (AUG) marks where translation begins, while promoter and terminator are DNA elements that regulate transcription, not translation. So the codon that signals termination is the stop codon.

In translation, termination is signaled by a stop codon. The stop codons—UAA, UAG, and UGA—do not code for any amino acid. Instead, they are recognized by release factors that prompt the ribosome to release the completed polypeptide and finish protein synthesis. The start codon (AUG) marks where translation begins, while promoter and terminator are DNA elements that regulate transcription, not translation. So the codon that signals termination is the stop codon.

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