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AP Biology/Unit 6: Gene Expression and Regulation
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mRNA Translation and Polypeptide Length
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An mRNA transcript is 900 nucleotides long. Since translation uses codons of 3 nucleotides each and one of these codons is a stop codon (which does not code for an amino acid), how many amino acids will the resulting polypeptide contain?

TABLE: mRNA Translation

Description Value
mRNA length $$900\,nucleotides$$
A

$$297$$

B

$$298$$

C

$$300$$

D

$$299$$

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