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    Three nucleotide codon

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    Because having each nucleotide code for only one
    amino acid would allow for only four different
    amino acids to be incorporated into a protein,
    it was obvious to researchers that there had to be
    a conversion between multiple bases and each
    amino acid. Would two nucleotides at a time be
    sufficient to provide enough codons to code for
    all 20 amino acids? Why or why not? How many
    amino acids could be coded for by codons
    containing only two nucleotides? Will three
    nucleotides per codon work? Why or why not?
    Explain your answers.

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    Solution Preview

    If two nucleotides coded for each amino acid, the number of possible combinations would be 4x4, as each base could be ...

    Solution Summary

    This solution gives a detailed explanation of why it is necessary to have a three nucleotide code in order to specify each amino acid in a protein.