Each group of three nucleotides encodes one amino acid.
View There Are 64 Codons And 20 Amino Acids
Background. Each codon is responsible for the insertion of the correct amino acid (bound to a trna molecule) into the protein being made from the dna repository. Since there are only 20 amino acids.
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If pairs of bases coded for an amino acid it could code for 16 (42) amino acids if triplets of bases code for amino acids you can have 64 (43) different codons. There are 20 amino acids but 64 mrna codons. Since there are 64 triplet codons and only 20 amino acids, incorporation of some amino acids must be influenced by more than one codon.
Each codon specifies a different amino acid.
Several different codons can specify the same amino acid. D.some are either start or stop codons, and most amino acids are coded by more than one codon. If 3 bases coded for 1 amino acid = 4^3 ( 64) amino acids coded for. This is possible because there are 4 bases (a, t, c, and g) and 3 positions in each codon.
