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Question: Answered & Verified by Expert
A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid?
ChemistryBiomoleculesBITSATBITSAT 2015
Options:
  • A Three
  • B Four
  • C One
  • D Two
Solution:
1220 Upvotes Verified Answer
The correct answer is: Three
The sequence of bases in mRNA are read in a serial order in groups of three at a time. Each triplet of nucleotides (having a specific sequence of bases) in known as codon. Each codon specifies one amino acid. Further since, there are four bases. therefore, $4^{3}=64$ triplets or codons are possible.

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