How is the genetic code less dogmatic than it may seem What

How is the genetic code less \'dogmatic\' than it may seem? What confers the redundancy inherent in the genetic code? Is there more than one tRNA for each amino acid?

Solution

Ans : Degeneracy of codons is the redundancy of the genetic code, exhibited as the multiplicity of three-base pair codon combinations that specify an amino acid. The degeneracy of the genetic code is accounts for the existence of synonymous mutations, Which make genetic code \"dogmatic\".

The code is read in non-overlapping groups of three mRNA nucleotides. Each group is called a codon. The genetic code is redundant. There are 64 possible codons but only 20 amino acids.

There is normally a single aminoacyl tRNA synthetase for each amino acid. But there can be a chance that more than one tRNA, and more than one anticodon, for an amino acid.