Department of Biology

Genetic Code Table

You will need this page to answer question 34.

To find the amino acid encoded by the codon AGU:

1. Look up A in the 1st position (left axis). This gives you the third block of amino acids from the
2. Look up G in the 2nd position (top axis). This gives you the fourth column of the third block of amino acids from the top (Ser, Ser, Arg, )
3. Look up U in the 3rd position (right axis). This gives you the top amino acid in the fourth column of the third block of amino acids from the top, i.e. Ser (serine.)

Now try GAG. The answer is below.

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