Select the odd one out.

What is the function of a nonsense codon?

$(i)$ The codon is read in mRNA in a contiguous fashion. There are no punctuations.
(ii) Some amino acids are coded by more than one codon.
(iii) $UUU$ would code for phenylalanine.
(iv) $GAA$ is a stop terminator codon.
Comparing the above statements (i-iv),select the correct option marked with $T$ (True) and $F$ (False) with respect to the salient features of the genetic code.

Who proposed the 'one gene one enzyme' hypothesis?

Statement $I$: The codon $\text{UAA}$ codes for lysine.
Statement $II$: Genetic code is usually ambiguous.
In the light of the above statements,choose the correct answer from the options given below.

Nirenberg synthesized an $m-RNA$ containing $34$ poly-adenine and found a $11$ poly-lysine polypeptide structure. This proves that the genetic code for lysine is ......