There are 64 codons in genetic code dictionary because

Options

A. There are 64 types of tRNA's found in cell
B. There are 44 meaningless and 20 codons for amino acids
C. There are 64 amino acids for coding
D. Genetic code is triplet

Answer

D

Explanation

Genetic code for 20 amino acid
If genetic code is code by one nitrogenous bases i.e. A, T, G, C no. of amino acid coded by it = 4’ = 4 amino acid
If 20 amino acid is coded by two codon = `4^(2) = 16` amino acid
If amino acid is coded by three codon = `4^(3)` = 64` amino acid