How many genetic codes specify the amino acid proline?

Which molecule determines the sequence of amino acids for protein synthesis?

The genetic code is present on ........

The terms $Gene$ and $Cistron$ are sometimes used as synonyms because:

How many nonsense codons are there?

$A$ polypeptide is produced as dictated by $mRNA$. The number of bases on the $mRNA$ that code for the polypeptide portion containing the $N$-terminal amino acid and the next $13$ amino acids is: