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    Question

    TheĀ  codon which is also known asĀ  startĀ  codon or

    initiationĀ  codonsĀ  itĀ  startsĀ  the synthesis of polypeptide chain.
    A AUG Correct Answer Incorrect Answer
    B UAA Correct Answer Incorrect Answer
    C UAG Correct Answer Incorrect Answer
    D UGA Correct Answer Incorrect Answer

    Solution

    Three codons, UAA, UAG and UGA do not code for any amino acid and hence they areĀ  called nonsenseĀ  codons. TheseĀ  codonsĀ  areĀ  alsoĀ  knownĀ  asĀ  stopĀ  codonsĀ  or termination codons as they provide stop signal for termination. TheĀ  codon i.e., AUGĀ  is known asĀ  startĀ  codon or initiationĀ  codonsĀ  itĀ  startsĀ  the synthesis of polypeptide chain.

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