How many nucleotides in messenger RNA's sequence makes a codon for an amino acid?
A
Three
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B
Four
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C
One
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D
Two
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Solution
The correct option is A Three A sequence of three nucleotides in messenger RNA makes a codon for an amino acid. A codon is a sequence of three adjacent nucleotides constituting the genetic code that determines the insertion of a specific amino acid in a polypeptide chain during protein synthesis or the signal to stop protein synthesis. A codon is defined by the initial nucleotide from which translation starts.