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How many different possible codon combinations are possible using the three letter alphabet of DNA
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How many different possible codon combinations are possible using the three letter alphabet of DNA

User Hgascon
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The genetic code includes 64 possible permutations, or combinations, of three-letter nucleotide sequences that can be made from the four nucleotides. Of the 64 codons, 61 represent amino acids, and three are stop signals. For example, the codon CAG represents the amino acid glutamine, and TAA is a stop codon.

User GTodorov
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