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Unformatted text preview: Codons One strand of DNA (the anti-sense strand) is used as a template to produce a single strand of mRNA. The bases in the mRNA strand are opposite (complimentary) to the bases in the DNA template strand; it resembles the sense strand of DNA except that the base thymine is replaced by uracil. The mRNA contains three-letter (three-base) codes used to determine the sequence of amino acids in the polypeptide that it codes for. For example, in the diagram below, GUG is the code for valine. The sequence of codes in DNA therefore determines the sequence of amino acids in the protein. Each three-letter code in mRNA is a codon . It is the code for one amino acid....
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This note was uploaded on 11/10/2011 for the course CHEM ch 101 taught by Professor - during the Fall '10 term at Montgomery.
- Fall '10