Which among the following is terminator codon ?

All of these

The correct answer is Option (4) – All of these

Among the options provided, UAA, UAG, and UGA are all considered terminator codons. These codons signal the termination of protein synthesis during translation. When a ribosome encounters any of these codons in the mRNA sequence, it does not correspond to an amino acid, and the translation process stops.

So, the correct answer is: All of these (UAA, UAG, and UGA) are terminator codons. U = uracil; A = adenine; G = guanine.