Biomolecules Question 214
Question: A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid-
Options:
A) Three
B) Four
C) One
D) Two
Show Answer
Answer:
Correct Answer: A
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. Further since, there are four bases, therefore, $ 4^{3}=64 $ triplets or codons are possible.