Three nucleotides encode an amino acid. So there's one Codon per amino acid.
The three-letter design of codons means that the four nucleotides found in mRNA—A, U, G, and C—may produce a total of 64 different combinations. Of these 64 codons, 61 are amino acids, and the remaining three are stop signals that activate the end of protein synthesis. Since there are only 20 distinct amino acids but 64 possible codons, most amino acids are indicated by more than one codon.
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Three nucleotides encode an amino acid. So there's one Codon per amino acid.
The three-letter design of codons means that the four nucleotides found in mRNA—A, U, G, and C—may produce a total of 64 different combinations. Of these 64 codons, 61 are amino acids, and the remaining three are stop signals that activate the end of protein synthesis. Since there are only 20 distinct amino acids but 64 possible codons, most amino acids are indicated by more than one codon.
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