The mnemonic
U Are Away, U Are Gone, U Go Away
What each word stands for
- UAAU Are Away: stop (ochre)
- UAGU Are Gone: stop (amber)
- UGAU Go Away: stop (opal)
Why it matters clinically
A nonsense mutation creates one of these codons and causes premature chain termination.
Where it stops being reliable
It does not mention that UGA can encode selenocysteine in special contexts.
Teaching aid, still awaiting independent review. Confirm facts in a standard source.