1. <span>The codons that signal the end of a polypeptide chain are called terminators. The correct option among all the options given is the fourth option or option "4".
2. "</span>A dehydration reaction forms a peptide bond." is the one among the following that <span>occurs after a codon and anticodon form hydrogen bonds. The correct option is the third option or option "3".
3. </span>If cysteine is specified by the codons UGC and UGU, the anticodons present on tRNAs that carry cysteine are <span>ACG and ACA. The correct option among the options given is the fourth option or option "4".</span>