| column $I$ (Codons) | column $II$ (Amino acids) |
| $(A)$ $UUU$ | $(I)$ Serine |
| $(B)$ $GGG$ | $(II)$ Methionine |
| $(C)$ $UCU$ | $(III)$ Phenylalanine |
| $(D)$ $CCC$ | $(IV)$ Glycine |
| $(E)$ $AUG$ | $(V)$ Proline |
$GGG -$ Glycine
$UCU -$ Serine
$CCC -$ Proline
$AUG -$ Methionine