Why is it important that a signal to stop translation be part of protein synthesis?

Why is it important that a signal to stop translation be part of protein synthesis?
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They signal to stop protein synthesis and release the amino acidchain. Stop codons are important because they signal the end ofsynthesis. Sometimes, mRNA is longer than what is needed for theamino acids so without stop codons, synthesis would continue untilthe end of the strand of RNA, leaving you with an incorrect aminoacid chain.
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