What is a codon? (For my honors biology final tomorrow, please help!)


A codon is the 3 nucleotide sequence which codes for an amino acid, stop or start signal in translating a protein. example: common mRNA start codon is AUG (Adenine, Uracil, Guanine) one of the codons for the amino acid Alanine is : GCU from general genetic code table for RNA. codons will be abreviated by 3 nucleotide letters A, G, U, T, C Uracil is only in RNA codons there are also DNA codon tables these tables are a general guide as different organisms may have special codons they utilize. below is a table of the twenty most common amino acids that make up proteins, below each are the codons generally found to code fore them.

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