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<p>codon in a nucleic acid sequence specifies a single amino acid. The vast majority of <a href="page.php?w=gene">gene</a>s are encoded with a single scheme (see the <a href="page.php?w=Codon_tables">RNA codon table</a>). That scheme is often called the canonical or standard genetic code, or simply the genetic code, though variant codes (such as in <a href="page.php?w=mitochondrion">mitochondria</a>) exist.</p>

<p><big>History</big></p>
<p>Efforts to understand how proteins are encoded began after <a href="page.php?w=Nucleic_acid_double_helix">DNA's structure</a></p><p>
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