Which one of the following statements is true for protein synthesis `(` translation `)` ?

Options

A. Amino acids are directly recognized by `m-RNA`
B. The third base of the codon is less specific
C. Only one codon codes for an amino acid
D. Every `t-RNA` molecule has more than one amino acid attachement

Answer

B

Explanation

Genetic code shows degeracy `i.e.` occurrence of more than 1 codon per amino acid. All the amino acid except methionine and tryptophan are coded by more than 1 coodon. For example , valine if specified by `GUU, GUC, GUA , GUG. `This shows that first two bases are common in alll the four codons coding for valine. But the third base can be changed.