The property of a codon for always coding for a specific amino acid is called:

$A$: Polypeptide sequences are dictated by $DNA$ and represented by $mRNA$.
$R$: Sequence of amino acids in a polypeptide can be predicted by the exact sequence of nucleotides on the $mRNA$ and template $DNA$.

Identify the amino acid sequence coded by the given $mRNA$ sequence: $5'-AUG-UUU-UUC-GUG-AUA-UGG-3'$

Which of the following triplet codons correctly represents a start or stop signal for protein synthesis?

Which of the following $m-RNA$ sequences can be completely translated into a polypeptide chain?
$(a)\ 5'-AUG\ UGA\ UUA\ AAG\ AAA-3'$
$(b)\ 5'-AUG\ AUA\ UUG\ CCC\ UGA-3'$
$(c)\ 5'-AGU\ UCC\ AGA\ CUC\ UAA-3'$
$(d)\ 5'-AUG\ UAC\ AGU\ AAC\ UAG-3'$

By experiments involving the breaking of $DNA$,it was discovered that the genetic code is a triplet. This was demonstrated by: