A gene has 900 nucleotides in its coding sequence (excluding any stop codon). How many amino acids will the polypeptide contain?
Answer and explanation
Correct answer: A. 300
- Step 1: Three bases (one codon) code for one amino acid. Step 2. . Answer: 300. Why not the others: 900 assumes one base per amino acid; 450 divides by 2; 2700 multiplies by 3.
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