UAA is a stop codon. Why does the UAA sequence in the segment of mRNA in Problem 9 not cause protein synthesis to stop?

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter28: Biomolecules: Nucleic Acids
Section28.SE: Something Extra
Problem 24AP: The codon UAA stops protein synthesis. Why does the sequence UAA in the following stretch of mRNA...
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UAA is a stop codon. Why does the UAA sequence in the segment of mRNA in Problem 9 not cause protein synthesis to stop?

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Let us consider mRNA as,

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