The codon $AUG$ has a dual function. It is an initiation codon and also codes for:

The $m-RNA$ contains ........... codons.

There is only one possible sequence of amino acids when deduced from a given nucleotide sequence. However,multiple nucleotide sequences can be deduced from a single amino acid sequence. Explain this phenomenon.

Genetic codes are

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

Which of the following statements is incorrect regarding the genetic code?
$(i)$ The codon is a triplet.
$(ii)$ $64$ codons code for amino acids.
$(iii)$ The genetic code is unambiguous.
$(iv)$ The genetic code is nearly universal.
$(v)$ $\text{AUG}$ has dual functions.