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Predict how many different mRNA sequences could code for the following amino acid sequence plus a stop codon: Met-Trp-Cys-(Stop).

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Answer: 6

Step-by-step explanation:

This is because the Met and Trp are coded by one codon, Cys is coded by two different codons, and Stop is encoded by three different codons. Therefor, 2x3=6.

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