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  • 4 years ago

In a genetic engineering experiment a piece of double-stranded DNA containing 6000 nucleotides coding for a specific polypeptide is transcribed and translated. What is the total number of amino acids in this polypeptide?

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  1. anonymous
    • 4 years ago
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    one codon contains 3 base. One codon codes for one amino acid. So 6000 nucleotides means 2000 codon. 2000 codon is 2000 amino acid. The stop codon doesn't code for any amino acid, so we are left with 1999 amino acids. hmm, all introns are spliced out and some exons are spliced out. So this '1999 amino acid' is the maximum number of amino acid. Correct me if i'm wrong.

  2. anonymous
    • 4 years ago
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    well it's actually a multiple choice question and the answer is 1000. but if what you're saying is correct, maybe they want us to pick the closest number. Thank you for the help though. The 3 bases part completely slipped my mind. :)

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