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Which codon specifies methionine and also serves to initiate translation?
AUAG
BAUG
CUAA
DUGA
Answer & Solution
Correct answer: B. AUG
1. One codon has two jobs at once.
2. The codon AUG has a special function.
3. In addition to specifying the amino acid methionine, it serves as the start codon.
4. That start codon initiates translation.
_Source: OpenStax Biology 2e (CC BY 4.0), Ch 15 'Genes and Proteins', sections 15.1-15.5_
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