One of the following is true with respect to AUG.

Options

A. It codes for methionine only.
B. It is also an initiation codon.
C. It codes for methionine in both prokaryotes and eukaryotes.
D. All of the above

Answer

D

Explanation

Polypeptide synthesis is signalled by two initiation codons - commonly AUG or methionine codon and rarely GUG or valine codon. AUG serves two main functions. It signals the start of translation and codes for the incorporation of the methionine into the grow ing polypeptide chain. AUG codes for methio nine in both prokaryotes and eukaryotes.