A coding region of mRNA is 507 nucleotides long (excluding the stop codon). How many amino acids does it code for?
Answer and explanation
Correct answer: A.
- Step 1: Each amino acid is coded by a codon of 3 nucleotides.
- Step 2: amino acids.
Answer
.
Why not the others: : Each nucleotide was counted as one amino acid. : Codons were assumed to have two bases. : The stop codon was counted as an amino acid.
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