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.