Describe the properties of the genetic code.

1) triplet. A triplet (codon) is a sequence of three nucleotides encoding one amino acid.
2) degeneracy (redundancy) – 1 amino acid is encoded by several triplets. The exception is methionine and tryptophan – one triplet.
3) specificity (uniqueness) – 1 codon encodes only 1 amino acid).
4) unidirectionality (collinearity) – the sequence of nucleotides in a gene exactly matches the sequence of amino acids in a protein (from 5 ′ to 3 ′ end).
5) non-overlap and compactness – the absence of punctuation marks inside the gene.
6) universality – in all living organisms the same amino acids are encoded by the same codons.

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