Biomolecules - Result Question 50
####50. A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid?
(a) Three
(b) Four
(c) One
(d) Two
[2004]
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Solution:
- (a) 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) is known as codon. Each codon specifies one amino acid.
There are four bases A, G, C,T, therefore, $4^{3}=64$
霉 triplets or codons are possible.
