All the terminator codons begin with which nitrogenous base?

Adenine

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Uracil

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Guanine

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Cytosine

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Solution

The correct option is D Uracil
There are three terminator codons - UAG, UGA, UAA. In the genetic code, a stop codon (or termination codon) is a nucleotide triplet within messenger RNA that signals a termination of translation. All of them begin with uracil.
Thus, the correct answer is option (B).

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