<prompt> True about genetic codeAUA codes for methionine in mitochondriaUGA codes for selenocysteineAUG codes for initiator codon in mammalian cellAGA AGG act as chain terminator in mammalian  <response>: UGA is a stop codon, but in special circumstance, it stands for seleno-cysteine the codon AUG both codes for methionine and serves as an initiation site: the first AUG in a mRNA;s coding region is where translation into protein begins.Ref: DM Vasudevan, 7th edition, page no: 599 